Science
Wind Chill Calculator
Perceived temperature from air temperature and wind speed using the North American formula.
Inputs
Wind Chill Calculator
Result
Wind chill
-12.3 °C
- Fahrenheit
- 9.8 °F
- Frostbite risk
- Frostbite in 30 min
- Validity
- Within validity range.
How it's calculated
WC = 13.12 + 0.6215·T − 11.37·V^0.16 + 0.3965·T·V^0.16 (T °C, V km/h)
Common questions
Why does wind make cold feel colder?
Wind strips away the thin layer of warm air your body heats around your skin, speeding heat loss. The formula estimates the equivalent still-air temperature.
When is the formula valid?
The 2001 Environment Canada / US NWS formula assumes air temperature at or below 10 °C and wind speed of at least 4.8 km/h at face height.
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