Enter the temperature and wind speed to get the wind chill — how cold it actually feels.
Understanding the wind chill calculation
Wind makes cold air feel colder by stripping heat from your skin. This calculator uses the US National Weather Service formula to work out the feels-like temperature from air temperature and wind speed.
It’s valid for temperatures at or below 50°F with wind above 3 mph.
A worked example
On the values this calculator opens with, the feels like is 6.2°F. Underneath, In Celsius comes out at -14.3°C and Frostbite risk at Low. Change any field and every figure updates as you type.
How to use it
- Enter the air temperature in Fahrenheit.
- Enter the wind speed in mph.
- Read the wind chill and frostbite risk.
Formula reference
WC = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275T·V^0.16
(T = °F, V = mph)
Questions people ask about this
What is wind chill?
The temperature it feels like on exposed skin once wind is factored in — always at or below the actual air temperature.
When does the formula apply?
The NWS formula is defined for temperatures of 50°F or below and winds above 3 mph.
Does wind chill affect objects?
No — it describes heat loss from warm skin. Objects can’t cool below the actual air temperature.