Temperature by Altitude Calculator
Estimated temperature at altitude
Get my altitude
Temperature by Altitude
Est. temp at target altitude
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※ Temperature drops about 0.65℃ per 100m of altitude (standard atmosphere). It varies 0.5–1.0℃ with weather and terrain. Tap "Use my location" to auto-fill current altitude.
Details
⚠️ Location is used only for lookup and is not stored. Altitude and temperature are reference estimates from standard models and may differ from reality. calcstool.com assumes no liability.
FAQ
Why is it colder at altitude?
Air thins and pressure drops with altitude, lowering temperature — about 0.65℃ per 100m in a standard atmosphere.
Summit temperature?
Enter your current altitude and temperature and the summit altitude. From 0m at 20℃, a 1,500m summit is about 10.2℃ (lapse 0.65).
Is lapse always 0.65?
No, it ranges 0.5–1.0℃ with weather and humidity. Clear dry days are higher.
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