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Search for a tool

Loan payment calculator

Instantly estimate the monthly payment, total cost and interest of your loan.

Finance Open

Word and character counter

Count words, characters, sentences and reading time in real time.

Text & Writing Open

BMI calculator

Calculate your body mass index and see where you stand per the WHO.

Health & Wellness Open

Password generator

Create strong, random passwords generated locally.

Security Open
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Image compressor

Shrink your JPG, PNG and WebP images without uploading them online.

Image & Photo Open
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Percentage calculator

Calculate a percentage, a share or a % change.

Finance Open
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VAT calculator

Calculate VAT, net and gross in an instant.

Finance Open
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Case converter

UPPERCASE, lowercase, Title, camelCase, snake_case…

Text & Writing Open
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Lorem Ipsum generator

Generate placeholder text for your mockups.

Text & Writing Open
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Unit converter

Convert lengths, weights and temperatures.

Converters Open
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Number base converter

Binary, octal, decimal and hexadecimal.

Converters Open
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JSON formatter

Indent, minify and validate your JSON.

Developer Open
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Color converter

Convert between HEX, RGB and HSL.

Developer Open
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UUID generator

Generate random v4 UUIDs in bulk.

Developer Open
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Age calculator

Your exact age in years, months and days.

Date & Time Open
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Base64 encoder / decoder

Encode and decode text to and from Base64.

Developer Open
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URL encoder / decoder

Encode and decode URLs (percent-encoding).

Developer Open
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Regex tester

Test your regex and highlight matches.

Developer Open
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Data storage converter

Bytes, KB, MB, GB, TB… in an instant.

Converters Open
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Roman numerals converter

Convert numbers ⇄ Roman numerals.

Converters Open
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Slug generator

Turn a title into a clean URL.

Text & Writing Open
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Remove duplicate lines

Clean a list by removing duplicate lines.

Text & Writing Open
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Unix timestamp converter

Unix timestamp ⇄ human date (local & UTC).

Date & Time Open
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Hash generator (SHA)

SHA-1, SHA-256, SHA-384 and SHA-512, live.

Security Open
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Water intake calculator

Estimate your daily water intake.

Health & Wellness Open
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Calorie calculator

Basal metabolic rate (BMR) and daily need (TDEE).

Health & Wellness Open
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Date difference calculator

Count days, weeks and months between 2 dates.

Date & Time Open
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Compound interest calculator

Grow your savings with compound interest.

Finance Open
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Image resizer

Change an image’s dimensions while keeping the ratio.

Image & Photo Open
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Password strength checker

Assess your password’s entropy and crack time.

Security Open
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QR code generator

Create a QR code from any text or URL.

Developer Open
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JSON ⇄ CSV converter

Convert between JSON and CSV both ways.

Developer Open
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Text comparison (diff)

Spot the differences between two texts.

Text & Writing Open
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Image converter (PNG, JPG, WebP)

Convert images to PNG, JPG or WebP — nothing uploaded.

Image & Photo Open
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CSS gradient generator

Design a gradient and copy ready-to-use CSS code.

Developer Open
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Image to Base64

Encode an image as a Base64 data URI for CSS or HTML.

Image & Photo Open
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Tip calculator & bill split

Tip, total and each person’s share at a glance.

Finance Open
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Date calculator (± days)

Add or subtract days, weeks, months from a date.

Date & Time Open
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Countdown timer

Days, hours, minutes and seconds until your event.

Date & Time Open
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Passphrase generator

Memorable passphrases that are actually strong.

Security Open
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Word frequency counter

Spot the most repeated words in your text.

Text & Writing Open
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WCAG contrast checker

Test the accessibility of your text/background colors.

Developer Open
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Number to words

Spell out any number in words, error-free.

Converters Open
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Time zone converter

What time will it be in Tokyo, New York or Sydney?

Date & Time Open
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JWT decoder

Inspect a JWT token’s header and claims.

Developer Open
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Scientific calculator

Type a full expression: trigonometry, roots, powers.

Converters Open
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Cron expression parser

Translate a crontab into plain words and see the next runs.

Developer Open
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Markdown editor

Write Markdown, preview live, export the HTML.

Text & Writing Open
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Photo editor

Brightness, contrast, filters and rotation, live.

Image & Photo Open
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Color palette generator

Extract colors from an image or build harmonies.

Image & Photo Open
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Voice recorder

Record your voice, visualize the sound, download.

Audio & Voice Open
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Discount calculator

Sale price, money saved and discount percentage.

Finance Open
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Reading time calculator

How long your text takes to read, silently or aloud.

Text & Writing Open
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Sleep calculator

Wake at the end of a 90-minute cycle, not in the middle.

Health & Wellness Open
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Week number

The ISO week of any date, with its boundaries.

Date & Time Open
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Unit price calculator

Compare up to 3 products and find the truly cheapest.

Finance Open
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Savings goal calculator

How much to save each month to reach your goal.

Finance Open
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Hourly ↔ salary converter

Convert between hourly rate, monthly and annual salary.

Finance Open
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Margin calculator

Margin, markup and multiplier from cost and price.

Finance Open
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Break-even calculator

How many units to sell to cover your costs.

Finance Open
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CAGR calculator

The compound annual growth rate between two values.

Finance Open
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Inflation calculator

What your money will really be worth in X years.

Finance Open
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FIRE calculator

The capital you need — and in how many years.

Finance Open
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Freelance rate calculator

The daily rate that actually pays your target income.

Finance Open
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Smoking cost calculator

What smoking costs you — and what quitting earns you.

Health & Wellness Open
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Electricity cost calculator

What this appliance costs per day, month and year.

Finance Open
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Find and replace

Bulk-replace in any text, regex included.

Text & Writing Open
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Sort lines

Alphabetical, length, random — with deduplication.

Text & Writing Open
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Text cleaner

Double spaces, empty lines, tabs: all gone.

Text & Writing Open
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Reverse text

Letters, words or lines backwards, in one click.

Text & Writing Open
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Remove accents

é → e, ñ → n, ü → u: text without diacritics.

Text & Writing Open
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Morse code translator

Text ↔ Morse both ways, with audio playback.

Text & Writing Open
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Typing speed test

60 seconds to measure your WPM and accuracy.

Text & Writing Open
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Scrabble score

A word’s value, letter by letter, using your language’s scale.

Text & Writing Open
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Random name picker

One list, N winners: a fair draw without replacement.

Games & Chance Open
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Team generator

Split a list into balanced teams, at random.

Games & Chance Open
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Ideal weight

Lorentz, Devine, Robinson and BMI range: 4 answers compared.

Health & Wellness Open
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Body fat percentage

Your fat % with a tape measure: the US Navy method.

Health & Wellness Open
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BMR calculator

Your calories at rest (Mifflin-St Jeor) and needs by activity level.

Health & Wellness Open
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Protein intake

Your grams per day by goal, in concrete food equivalents.

Health & Wellness Open
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Waist-to-hip ratio

Two measurements, a WHO-validated cardio indicator.

Health & Wellness Open
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Heart rate zones

Your 5 training zones with the Karvonen method.

Health & Wellness Open
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Running pace

Distance + time → pace, speed and split times.

Health & Wellness Open
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Due date

Estimated due date, trimesters and current week, from your last period.

Baby & Parenting Open
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Ovulation calculator

Estimated ovulation and 6-day fertile window, based on your cycle.

Baby & Parenting Open
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Blood alcohol estimate

Widmark estimate and theoretical delays — never a green light to drive.

Health & Wellness Open
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Working days

Count the working days between two dates, holidays excluded.

Date & Time Open
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Duration calculator

Add up hh:mm:ss durations: sum, average, total.

Date & Time Open
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Stopwatch

Precise stopwatch with laps and keyboard shortcuts.

Date & Time Open
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Timer

Countdown with presets and a sound alarm.

Date & Time Open
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Pomodoro timer

25 min focus, 5 min break: the Pomodoro method.

Date & Time Open
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Moon phase

The moon phase for any date, with illumination and upcoming full moons.

Date & Time Open
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Sunrise & sunset

Sun times and day length, for your city or your coordinates.

Date & Time Open
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Age on other planets

How old would you be on Mars, Jupiter or Neptune?

Date & Time Open
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Year progress

What percentage of the year has passed? And how many days remain?

Date & Time Open
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Zodiac sign

Your Western and Chinese sign, with element, from your date.

Astrology & Numerology Open
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HTML entities

Encode and decode HTML entities, named or numeric.

Developer Open
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CSS minifier

Compress or beautify your CSS, with the byte savings.

Developer Open
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SQL formatter

Format your SQL queries: keywords and indentation.

Developer Open
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XML formatter

Indent and validate your XML, errors flagged.

Developer Open
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String escaper

One string, escaped for JSON, JS, HTML, URL and Base64 at once.

Developer Open
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Subnet calculator

IP + CIDR → network, broadcast, host range and masks.

Developer Open
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Chmod calculator

Tick the rwx permissions: octal and symbolic notation live.

Developer Open
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URL parser

Break down a URL: protocol, host, path and decoded parameters.

Developer Open
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HTTP status codes

Look up an HTTP code: meaning and when to use it.

Developer Open
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User-Agent parser

Browser, OS and engine extracted from a User-Agent string.

Developer Open
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ULID & NanoID generator

Unique time-sortable identifiers, an alternative to UUID.

Developer Open
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JSON to TypeScript

Turn a JSON object into typed TypeScript interfaces.

Developer Open
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CSV to Markdown table

Convert CSV into a Markdown table, with alignments.

Developer Open
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Meta tags generator

Title, description, Open Graph and Twitter, with a social card preview.

Developer Open
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Robots.txt generator

Create a robots.txt file: agents, permissions, sitemap.

Developer Open
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Box-shadow generator

Compose multi-layer CSS shadows with a live preview.

Developer Open
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Border-radius generator

Round corners and create organic blob shapes.

Developer Open
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Hex viewer

Inspect a file in hex and ASCII, type detected from magic bytes.

Developer Open
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MIME types

Find the MIME type for an extension, and vice versa.

Developer Open
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Aspect ratio calculator

Compute width, height and ratio, with standard resolutions.

Image & Photo Open
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Favicon generator

Text or emoji → PNG favicon in several sizes, with a tab preview.

Image & Photo Open
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Placeholder image generator

Generate a placeholder image at the size and colors you want.

Image & Photo Open
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Meme generator

Add outlined top/bottom text to an image, export PNG.

Image & Photo Open
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Image watermark

Apply a single or tiled text watermark, adjustable opacity and angle.

Image & Photo Open
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Image crop

Crop with a lockable ratio, draggable area, PNG export.

Image & Photo Open
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EXIF viewer

Read a photo’s EXIF metadata (camera, date, GPS) and strip it.

Image & Photo Open
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Colorblindness simulator

See an image as people with color blindness perceive it (protan/deutan/tritan).

Image & Photo Open
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Barcode generator

Create EAN-13 or Code 128 barcodes with checksum, PNG export.

Image & Photo Open
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Color eyedropper

Pick a color from the screen or an image, with history.

Image & Photo Open
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SVG cleaner

Shrink an SVG: remove comments, metadata and whitespace, see the savings.

Developer Open
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Shoe size converter

Convert EU, UK, US and cm shoe sizes for men, women and kids.

Converters Open
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Clothing size converter

Convert FR/EU, UK, US and IT sizes for tops and trousers.

Converters Open
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Height: feet-inches ↔ cm

Convert a height between feet/inches and centimetres.

Converters Open
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Fuel consumption converter

Convert L/100 km, MPG (US/UK) and km/L, and estimate a trip’s cost.

Converters Open
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Cooking measurement converter

Convert cups, oz, tbsp ↔ grams and ml depending on the ingredient.

Cooking & Recipes Open
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Dog age calculator

Convert your dog’s age with the modern logarithmic formula and by size.

Pets & Animals Open
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Cat age calculator

Convert your cat’s age using the reference veterinary scale.

Pets & Animals Open
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Ring size converter

Convert diameter and circumference into FR, US and UK ring sizes.

Converters Open
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Fraction & decimal converter

Convert decimal ↔ simplified fraction (GCD) and compute + and ×.

Converters Open
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Download time calculator

Estimate a download’s duration from file size and speed (fibre, 4G, ADSL).

Converters Open
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Online metronome

Accurate metronome (Web Audio): BPM, time signature, accent, tap tempo.

Audio & Voice Open
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Chromatic tuner

Tune by mic: note + cents, adjustable 440 Hz reference.

Audio & Voice Open
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Tone generator

Emit a pure tone: sine/square/triangle, 20 Hz to 20 kHz.

Audio & Voice Open
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White, pink & brown noise

Generate white, pink or brown noise with a stop timer.

Audio & Voice Open
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BPM counter

Tap to the beat: average tempo and stability computed live.

Audio & Voice Open
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Text to speech

Have your text read aloud by a system voice, adjustable rate and pitch.

Audio & Voice Open
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Speech to text

Dictate and get the live transcription, then copy the text.

Audio & Voice Open
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PIN generator

Generate secure random PIN codes (crypto), without sequences or repeats.

Security Open
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TOTP generator

Generate 2FA (TOTP) codes from a base32 secret, with a countdown.

Security Open
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File hash

Compute the SHA-256/SHA-1 hash of a file or text, verify integrity.

Security Open
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Encrypt text

Encrypt a message with a password (AES-GCM + PBKDF2), safe to share.

Security Open
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Dice roller

Roll dice from d4 to d100, several at once, with total and history.

Games & Chance Open
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Coin flip

Flip a coin, with a counter and streaks, crypto random.

Games & Chance Open
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Random number generator

Draw random numbers between min and max, no duplicates, via crypto.

Games & Chance Open
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Lottery number generator

Generate EuroMillions, Loto or custom lottery grids, with crypto random.

Games & Chance Open
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Tile calculator

Surface + tile size → number of tiles, boxes and cutting margin.

Home & DIY Open
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Proration calculator

Compute an amount prorated by days or shares (rent, subscription).

Finance Open
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Rule of 72

Estimate how many years it takes for capital to double, from a rate.

Finance Open
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Scientific notation converter

Convert between scientific, decimal, engineering notation and significant figures.

Converters Open
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JSON diff

Compare two JSON and spot additions, removals and changes.

Developer Open
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NATO phonetic alphabet

Spell any text with the NATO phonetic alphabet (Alfa, Bravo, Charlie…).

Text & Writing Open
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Work hours calculator

Compute hours worked (start, end, break) and your daily/weekly pay.

Date & Time Open
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px to rem converter

Convert CSS units px, rem, em, pt and % with a configurable base.

Developer Open
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One-rep max calculator

Estimate your one-rep max (1RM) from a weight and a number of reps.

Health & Wellness Open
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50/30/20 budget calculator

Split your income with the 50/30/20 rule: needs, wants, savings.

Finance Open
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Bionic reading

Bolds the start of each word to guide the eye and read faster.

Text & Writing Open
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Unicode character inspector

Break down each character: U+ code point, decimal, UTF-8 bytes, HTML entity.

Developer Open
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Macro calculator

Split your calories into grams of protein, carbs and fat by diet type.

Health & Wellness Open
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ROI calculator

Compute return on investment: net gain, ROI % and annualized ROI.

Finance Open
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Base32 encode / decode

Encode and decode text to Base32 (RFC 4648, A-Z 2-7 alphabet).

Security Open
★

Color picker

Pick a color on a visual field and get its HEX, RGB and HSL code.

Image & Photo Open
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Cubic-bezier generator

Craft a CSS animation easing curve by dragging the handles, with an animated preview.

Developer Open
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Flexbox generator

Tune a Flexbox container live and copy the ready-to-use CSS.

Developer Open
★

Text-shadow generator

Compose multi-layer text shadows with a live preview and copy-ready CSS.

Developer Open
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Signature pad

Sign with mouse or finger and download your signature as a transparent PNG.

Image & Photo Open
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Fancy text generator

Turn your text into Unicode fonts (bold, italic, script…) for social media.

Text & Writing Open
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Glassmorphism generator

Create a frosted-glass effect (background blur) with live preview and copy-ready CSS.

Developer Open
★

CSS Grid generator

Build a CSS grid (columns, rows, gap) live and copy the CSS.

Developer Open
★

Color shades generator

Generate the tints and shades of a color (light to dark), copyable codes.

Image & Photo Open
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SVG to PNG converter

Convert SVG code to a PNG image at the size of your choice, in the browser.

Image & Photo Open
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Currency converter

Convert between currencies with up-to-date exchange rates (ECB), amounts stay local.

Finance Open
★

Text to binary

Convert text to binary and back (UTF-8, 8 bits per byte).

Text & Writing Open
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Waist-to-height ratio

Compute your waist-to-height ratio (WHtR) and see your risk level.

Health & Wellness Open
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CSS clamp() generator

Generate a fluid CSS clamp() size (responsive typography) between two screen widths.

Developer Open
★

Image to ASCII art

Turn an image into ASCII art (characters), copyable or downloadable.

Image & Photo Open
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What is my IP address

See your public IP address (IPv4/IPv6) and your connection details.

Developer Open
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Readability score

Measure a text’s readability (Flesch score) and the required grade level.

Text & Writing Open
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Payment fee calculator

Compute PayPal, Stripe or custom fees and the net amount received.

Finance Open
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Body surface area (BSA)

Compute your body surface area (BSA) with the Mosteller and Du Bois formulas.

Health & Wellness Open
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Base58 encode / decode

Encode and decode text to Base58 (Bitcoin alphabet, no 0/O/I/l).

Security Open
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Dictionary

Definitions, pronunciation, audio and synonyms of a word.

Text & Writing Open
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Food product facts

Nutri-Score, NOVA and nutrition of a product from its barcode.

Health & Wellness Open
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Public holidays

Official public holidays of a country for any year.

Date & Time Open
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Exchange rate history

Chart of a rate’s evolution over 30 days, 90 days or 1 year.

Finance Open
★

Country info

Capital, population, currency, flag and dialing code of a country.

Converters Open
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Weather

Current weather and 7-day forecast for any city.

Web & Data Open
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Air quality

European index and pollutants (PM2.5, NO₂…) for a city.

Web & Data Open
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Wikipedia summary

Extract, thumbnail and link of a Wikipedia article.

Web & Data Open
★

Book finder

Find a book by title, author or ISBN (Open Library).

Web & Data Open
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Geocoding

Place name → GPS coordinates, elevation, time zone.

Web & Data Open
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On this day

Historical events, births and deaths for a date.

Date & Time Open
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Pokédex

A Pokémon’s sprite, types and base stats (PokéAPI).

Web & Data Open
★

Art explorer

Search artworks (Art Institute of Chicago).

Image & Photo Open
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Flag quiz

Guess the country from its flag (score + streak).

Games & Chance Open
★

Recipe finder

A recipe’s photo, ingredients and steps (TheMealDB).

Web & Data Open
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Has my password leaked?

Check if a password leaked, without ever sending it (k-anonymity).

Security Open
★

Meeting planner

Find the best time across multiple time zones (24-hour grid).

Date & Time Open
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Invoice generator

Create a professional invoice with live preview and PDF export.

Finance Open
★

Spin the wheel

Pick a winner at random with an animated spinning wheel.

Games & Chance Open
★

Crypto prices

Top 10 cryptos, 24h change and 7-day mini chart (CoinGecko).

Web & Data Open
★

Amortization schedule

Monthly payment, total interest and yearly schedule with chart.

Finance Open
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Calendar event (.ics)

Create an event, download the .ics or add it to Google Calendar.

Date & Time Open
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Calorie needs (TDEE)

Calories per day by activity and goal + macro split.

Health & Wellness Open
★

DNS lookup

A domain’s DNS records (A, MX, TXT, NS, CNAME).

Web & Data Open
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Calories burned

Calories burned by activity, weight and duration (MET values).

Health & Wellness Open
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Merge PDF

Combine several PDFs into one, right in your browser.

PDF & Documents Open
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Split PDF

Extract pages or ranges (1-3, 5) into a new PDF.

PDF & Documents Open
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JPG to PDF

Turn your images (JPG, PNG, WebP) into a clean PDF.

PDF & Documents Open
★

Rotate PDF

Rotate all pages by 90, 180 or 270°.

PDF & Documents Open
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PDF page numbers

Add page numbers (position, start, format) to your PDF.

PDF & Documents Open
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Resize image

Change an image’s size in pixels or percent, keeping the aspect ratio.

Image & Photo Open
★

Collage maker

Combine several photos into a collage: grid, gap, rounded corners, background.

Image & Photo Open
★

Mortgage calculator

Full monthly payment (principal, interest, tax, insurance) and total loan cost.

Finance Open
★

PDF watermark

Add a text watermark to every page (size, opacity, angle).

PDF & Documents Open
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Delete PDF pages

Remove specific pages (2, 5-6) and keep the rest of the document.

PDF & Documents Open
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Credit card payoff

Time, total interest and required payment to clear a card balance.

Finance Open
★

Circle crop

Turn a photo into a circle (avatar) with zoom and border, as transparent PNG.

Image & Photo Open
★

Rhyme finder

Find rhymes for an English word, grouped by syllables (perfect and near rhymes).

Text & Writing Open
★

Crop PDF

Crop the margins of every page (top, right, bottom, left) by percentage.

PDF & Documents Open
★

Random user generator

Generate complete fake identities (name, photo, email, address) for your tests.

Web & Data Open
★

Sign PDF

Place a signature, logo or stamp (image) on a page of your PDF.

PDF & Documents Open
★

Cocktail finder

Illustrated cocktail recipe: photo, ingredients, glass and instructions.

Web & Data Open
★

Salary converter

Convert a salary between annual, monthly, weekly, daily and hourly.

Finance Open
★

Pixelate image

Censor an area (face, address, data) by pixelating it into a mosaic.

Image & Photo Open
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Online notepad

A notepad that saves everything automatically in your browser, offline.

Text & Writing Open
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Photo to sketch

Turn a photo into a pencil sketch, with adjustable intensity.

Image & Photo Open
★

Trivia quiz

Test your knowledge: multiple-choice questions, score and streak.

Games & Chance Open
★

Net worth calculator

See where you stand: total assets minus total liabilities.

Finance Open
★

Weight loss calculator

Estimate the time and date to reach your target weight at your pace.

Health & Wellness Open
★

Temperature converter

Convert instantly between Celsius, Fahrenheit and Kelvin.

Converters Open
★

Round image corners

Round the corners of an image with an adjustable radius, as transparent PNG.

Image & Photo Open
★

Quote generator

Show a random inspirational quote with its author, copyable in one click.

Web & Data Open
★

Simple interest

Calculate simple interest (I = principal × rate × time) and the total.

Finance Open
★

Speed converter

Convert between km/h, mph, m/s, knots and ft/s, live.

Converters Open
★

A1C calculator

Convert HbA1c (%) to estimated average glucose (mg/dL and mmol/L).

Health & Wellness Open
★

Weight converter

Convert between kilograms, grams, pounds, ounces, stones and tonnes, live.

Converters Open
★

Length converter

Convert between mm, cm, m, km, inches, feet, yards and miles, live.

Converters Open
★

Markup calculator

Compute the selling price, profit and margin from cost and markup.

Finance Open
★

Add image border

Frame an image with a border of adjustable width and color, as PNG.

Image & Photo Open
★

Random dog

Show a random dog photo (with its breed) and refresh endlessly.

Web & Data Open
★

Remove duplicate lines

Clean a list: drop duplicate lines, blanks and stray whitespace.

Text & Writing Open
★

Flip image

Flip an image horizontally or vertically, then download it.

Image & Photo Open
★

Sales tax calculator

Add or remove sales tax: net price, tax amount and total price.

Finance Open
★

Time converter

Convert seconds, minutes, hours, days and weeks instantly.

Converters Open
★

Unix timestamp converter

Convert a Unix timestamp to a readable date (UTC and local) and back.

Date & Time Open
★

Extract emails

Find and extract all email addresses from any text, deduplicated.

Text & Writing Open
★

Blood pressure categories

Classify a blood pressure reading (systolic/diastolic) using the AHA categories.

Health & Wellness Open
★

Debt-to-income ratio

Compute your debt-to-income (DTI) ratio from your monthly debts and income.

Finance Open
★

Area converter

Convert m², km², ft², yd², acres and hectares in an instant.

Converters Open
★

Leap year calculator

Check whether a year is a leap year and find the next leap years.

Date & Time Open
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Remove line breaks

Strip line breaks from text to get one continuous, neatly spaced paragraph.

Text & Writing Open
★

Down payment calculator

Work out the down payment by percent or amount, and the balance left to finance.

Finance Open
★

Lean body mass (LBM)

Estimate your lean and fat mass from sex, height and weight.

Health & Wellness Open
★

Volume converter

Convert litres, millilitres, m³, gallons, pints and cups in an instant.

Converters Open
★

Day of the week

Find which day of the week any date falls on, past or future.

Date & Time Open
★

Text repeater

Repeat any text as many times as you want, with optional separator and numbering.

Text & Writing Open
★

APY calculator

Convert a nominal rate and compounding frequency into the effective annual yield (APY).

Finance Open
★

Rotate image

Rotate an image in 90° steps, then download the result as PNG.

Image & Photo Open
★

Energy converter

Convert joules, kilojoules, calories, kilocalories, watt-hours and kWh in an instant.

Converters Open
★

Days until a date

Count the days left until a date (or elapsed since), with weeks and months.

Date & Time Open
★

Extract URLs

Find and extract all web addresses (URLs) from any text, deduplicated.

Text & Writing Open
★

Pay raise calculator

Compute your new salary after a percentage raise, and the amount gained.

Finance Open
★

Grayscale image

Convert an image to grayscale (black and white), then download it as PNG.

Image & Photo Open
★

Pressure converter

Convert pascals, kilopascals, bars, psi, atmospheres and mmHg in an instant.

Converters Open
★

Add or subtract time

Add or subtract hours and minutes from a start time to find the resulting time.

Date & Time Open
★

Strip HTML tags

Remove all HTML tags from text to get clean, readable plain text.

Text & Writing Open
★

Overtime pay calculator

Compute your total pay with regular hours and overtime hours at a multiplier (×1.5 by default).

Finance Open
★

Blur image

Apply an adjustable blur to an image (background, redaction), then download it as PNG.

Image & Photo Open
★

Power converter

Convert watts, kilowatts, horsepower (hp and PS), BTU/h and kcal/h in an instant.

Converters Open
★

Chinese zodiac

Find your Chinese zodiac sign (animal and element) from your birth year.

Astrology & Numerology Open
★

Add line numbers

Add a number in front of each line of text, with adjustable start, step and separator.

Text & Writing Open
★

Commission calculator

Compute your commission from the sales amount and rate, plus the total received.

Finance Open
★

Invert image colors

Invert the colors of an image (photo negative), then download the result as PNG.

Image & Photo Open
★

Angle converter

Convert degrees, radians, gradians, turns, arcminutes and arcseconds in an instant.

Converters Open
★

JSON to YAML

Convert JSON into readable YAML with clean indentation. Ideal for config files.

Developer Open
★

Upside down text

Flip your text upside down (ǝlpoɔ) with Unicode characters, to copy and paste anywhere.

Text & Writing Open
★

Rent affordability

Estimate the rent you can afford from your income and the recommended share (30%).

Finance Open
★

Sepia image

Apply a vintage sepia filter to an image, then download it as PNG.

Image & Photo Open
★

Frequency converter

Convert hertz, kilohertz, megahertz, gigahertz and revolutions per minute in an instant.

Converters Open
★

CSV to JSON

Convert CSV into JSON (array of objects), with adjustable headers and delimiter.

Developer Open
★

Paint calculator

Area + coats + coverage → liters of paint needed.

Home & DIY Open
★

Concrete calculator

Length × width × thickness → concrete volume and bags.

Home & DIY Open
★

Wallpaper calculator

Perimeter + height → number of wallpaper rolls.

Home & DIY Open
★

Flooring calculator

Area + waste + pack → number of packs to buy.

Home & DIY Open
★

BTU calculator (AC/heating)

Area + height → AC/heating power in BTU and kW.

Home & DIY Open
★

Ohm’s law calculator

Enter any 2 of U, I, R → voltage, current, resistance and power.

Electronics Open
★

Resistor color code

4 color bands → resistance value in ohms and tolerance.

Electronics Open
★

LED resistor calculator

Voltage, Vf and current → series resistor and power for your LED.

Electronics Open
★

Voltage divider calculator

Vin, R1 and R2 → output voltage Vout and divider current.

Electronics Open
★

Battery life calculator

Capacity (mAh) and current draw (mA) → estimated runtime in hours.

Electronics Open
★

CTR calculator

Clicks and impressions → click-through rate (CTR) as a percentage.

Marketing & SEO Open
★

CPM calculator

Cost and impressions → CPM (cost per thousand views).

Marketing & SEO Open
★

ROAS calculator

Revenue and ad spend → return on ad spend (ROAS).

Marketing & SEO Open
★

Conversion rate calculator

Conversions and visitors → conversion rate as a percentage.

Marketing & SEO Open
★

UTM link builder

Build a URL with UTM parameters to track your campaigns.

Marketing & SEO Open
★

Recipe scaler

Original and desired servings → factor and scaled quantities.

Cooking & Recipes Open
★

Oven temperature converter

Convert °C, °F and gas mark for your recipes.

Cooking & Recipes Open
★

Baker’s percentage calculator

Flour = 100% → water, salt and yeast in grams from the %.

Cooking & Recipes Open
★

Portion calculator

Quantity per person × guests → total quantity to plan.

Cooking & Recipes Open
★

GPA calculator

Each course’s grade and credits → weighted GPA.

Education & Study Open
★

Grade calculator

Points earned and possible → percentage and letter grade.

Education & Study Open
★

Final grade calculator

Current grade, target and weight → grade needed on the final.

Education & Study Open
★

Exam score calculator

Correct answers and threshold → percentage and pass/fail.

Education & Study Open
★

Citation generator

Author, title, year… → citation in APA, MLA or Chicago format.

Education & Study Open
★

Social media character counter

Count characters and check the limits of X, Instagram, TikTok…

Social Media Open
★

Hashtag generator

Turn your keywords into ready-to-paste hashtags.

Social Media Open
★

Engagement rate calculator

Likes, comments and followers → engagement rate as a percentage.

Social Media Open
★

YouTube earnings estimator

Monthly views and RPM → estimated monthly and yearly revenue.

Social Media Open
★

Username generator

A base name → username ideas to try for availability.

Social Media Open
★

Tire size calculator

Width / aspect / rim → diameter, circumference and revs per km.

Cars & Vehicles Open
★

Gear ratio calculator

Drive and driven gear teeth → gear ratio.

Cars & Vehicles Open
★

Fuel trip cost calculator

Distance, consumption and price → fuel and trip cost.

Cars & Vehicles Open
★

EV charging time calculator

Capacity, power and levels → estimated charging time.

Cars & Vehicles Open
★

Engine displacement calculator

Bore, stroke and cylinders → displacement in cc and liters.

Cars & Vehicles Open
★

Aquarium volume calculator

Length × width × water height → volume in liters and gallons.

Pets & Animals Open
★

Pet food portion calculator

Weight and ration → food amount per day and per meal.

Pets & Animals Open
★

Pet name generator

Name ideas for your dog, cat or other companion.

Pets & Animals Open
★

Molar mass calculator

Chemical formula (H2O, C6H12O6…) → molar mass in g/mol.

Science Open
★

pH calculator

Concentration [H⁺] → pH, pOH and [OH⁻] of a solution.

Science Open
★

Density calculator

Mass and volume → density in g/cm³ and kg/m³.

Science Open
★

Kinetic energy calculator

Mass and velocity → kinetic energy (½ m v²) in joules.

Science Open
★

Half-life calculator

Initial amount, half-life and time → remaining amount.

Science Open
★

Knitting gauge calculator

Gauge → stitches to cast on and rows for a target size.

Crafts & Sewing Open
★

Yarn yardage calculator

Yarn needed and ball size → meters and number of balls.

Crafts & Sewing Open
★

Fabric calculator

Pieces and fabric width → length of fabric to buy.

Crafts & Sewing Open
★

Crochet hook conversion

Crochet hook size equivalents mm ↔ US ↔ UK.

Crafts & Sewing Open
★

Bead counter

Length and bead diameter → number of beads needed.

Crafts & Sewing Open
★

Filament cost calculator

Part weight and spool price → filament cost.

3D printing Open
★

Filament length ↔ weight

Convert filament length and weight by diameter and material.

3D printing Open
★

3D print cost calculator

Filament + electricity (time × power) → total print cost.

3D printing Open
★

Infill weight calculator

Model volume and infill → estimated filament weight.

3D printing Open
★

Resin cost calculator

Resin used and bottle price → cost of a resin print.

3D printing Open
★

Prayer times calculator

The 5 daily prayer times for your location.

Faith & Calendars Open
★

Hijri date converter

Convert Gregorian dates ↔ Islamic (Hijri) calendar.

Faith & Calendars Open
★

Hebrew date converter

Convert a Gregorian date to the Hebrew calendar date.

Faith & Calendars Open
★

Easter date calculator

Easter date (Western and Orthodox) for any year.

Faith & Calendars Open
★

Fasting hours calculator

Fasting duration (Ramadan) between dawn and sunset.

Faith & Calendars Open
★

Baby name generator

Name ideas: boy, girl or unisex.

Baby & Parenting Open
★

Baby feeding calculator

Baby weight → milk amount per day and per bottle.

Baby & Parenting Open
★

Pregnancy week calculator

Last period → pregnancy week, trimester and due date.

Baby & Parenting Open
★

Contraction timer

Time the duration and frequency of contractions.

Baby & Parenting Open
★

Diaper cost calculator

Diapers per day and price → daily, monthly, yearly and total cost.

Baby & Parenting Open
★

Ancestor count calculator

How many ancestors you have at the Nth generation (2ⁿ).

Genealogy & Family Open
★

Cousin relationship calculator

Cousin degree and how many times removed.

Genealogy & Family Open
★

Shared DNA calculator

Percentage of DNA shared by relationship.

Genealogy & Family Open
★

Generation gap calculator

Generations × years/generation → era reached.

Genealogy & Family Open
★

Descendant count calculator

Children per couple over N generations → estimated descendants.

Genealogy & Family Open
★

Life path number

Your numerology life path number from your birth date.

Astrology & Numerology Open
★

Name numerology

The expression number of a name (Pythagorean method).

Astrology & Numerology Open
★

Biorhythm calculator

Physical, emotional and intellectual cycles on a given date.

Astrology & Numerology Open
★

Birthstone finder

The birthstone associated with your month.

Astrology & Numerology Open
★

Zodiac compatibility

The compatibility between two zodiac signs.

Astrology & Numerology Open
★

Compass bearing calculator

Bearing, azimuth and direction between two GPS points.

Outdoor & Survival Open
★

Wind chill calculator

Feels-like temperature from temperature and wind.

Outdoor & Survival Open
★

Water purification calculator

Bleach and tablet dose to make water drinkable.

Outdoor & Survival Open
★

Firewood calculator

Firewood needed for a fire based on its duration.

Outdoor & Survival Open
★

Hiking time calculator

Hike duration (Naismith’s rule) from distance and ascent.

Outdoor & Survival Open
★

Volumetric weight calculator

Volumetric and chargeable weight of a parcel from its dimensions.

Shipping & Parcels Open
★

Shipping cost calculator

Estimate a shipment cost: base fee, per-kg rate and fuel surcharge.

Shipping & Parcels Open
★

Pallet calculator

How many boxes fit on a pallet (layers × footprint).

Shipping & Parcels Open
★

Parcel size checker

Longest side, girth and length+girth vs carrier limits.

Shipping & Parcels Open
★

Freight class calculator

NMFC class of an LTL shipment from its density (lb/ft³).

Shipping & Parcels Open
★

Hair dye ratio calculator

How much developer to mix based on your hair color ratio.

Beauty & Cosmetics Open
★

Fragrance dilution calculator

Concentrate and alcohol for a given concentration (EDT, EDP, extrait).

Beauty & Cosmetics Open
★

Skincare order

In which order to apply cleanser, serum, moisturizer and sunscreen.

Beauty & Cosmetics Open
★

Skin undertone finder

Cool, warm or neutral, to pick the right foundation.

Beauty & Cosmetics Open
★

SPF protection time

Theoretical protection time of an SPF and reapplication reminder.

Beauty & Cosmetics Open
★

Braking distance calculator

Reaction + braking distance from speed and road condition.

Cars & Vehicles Open
★

Fuel economy converter

L/100 km ↔ mpg (US/UK) ↔ km/L, exact conversions.

Cars & Vehicles Open
★

Tire pressure converter

Convert bar ↔ psi ↔ kPa for your tires.

Cars & Vehicles Open
★

Air fryer converter

Adapt an oven recipe’s temperature and time to the air fryer.

Cooking & Recipes Open
★

Meat cooking temperatures

Core temperatures by meat and doneness (°C/°F), safety included.

Cooking & Recipes Open
★

Yeast converter

Fresh ↔ active dry ↔ instant yeast, in grams.

Cooking & Recipes Open
★

Capacitor code calculator

Decode a 3-digit code into pF, nF and µF.

Electronics Open
★

Wire gauge (AWG)

Diameter, cross-section and max current of a wire by AWG.

Electronics Open
★

Series & parallel resistors

Equivalent resistance of several resistors in series or parallel.

Electronics Open