Date & Time
Age calculator
Your exact age in years, months and days.
- Instant
- Free
- Private (processed locally)
- No sign-up
Much more than just “how old am I?”
From your date of birth, the tool shows your exact age in years, months and days, the total days lived, the number of weeks, and a countdown to your next birthday.
Use cases
- Paperwork: know your exact age on a given date.
- Birthdays: see how many days are left to wait.
- Curiosity: discover the number of days you have lived.
Enter a date of birth, and optionally a reference date; everything is computed instantly and privately.
Frequently asked questions
How is exact age calculated?
We count the number of full years elapsed since birth, then the remaining months and days. The tool accounts for month lengths and leap years.
Can I calculate age at a past or future date?
Yes. The second “calculate as of” field lets you find the age at any date, not only today.
Does it handle leap years?
Yes. The number of days per month and February 29 are taken into account for an exact result.
Is my data saved?
No. The calculation runs in your browser; your date of birth is neither sent nor stored.