Outdoor & Survival
Practical tools for hiking, camping and survival: bearing and azimuth between two GPS points, felt temperature (wind chill), water purification (bleach/tablet dose), firewood needed for a fire and hiking time (Naismith’s rule). Exact calculations, 100% in your browser.
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Compass bearing calculator
Bearing, azimuth and direction between two GPS points.
Outdoor & Survival Open
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Wind chill calculator
Feels-like temperature from temperature and wind.
Outdoor & Survival Open
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Water purification calculator
Bleach and tablet dose to make water drinkable.
Outdoor & Survival Open
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Firewood calculator
Firewood needed for a fire based on its duration.
Outdoor & Survival Open
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Hiking time calculator
Hike duration (Naismith’s rule) from distance and ascent.
Outdoor & Survival Open