Calculate wind chill temperature and frostbite risk
This wind chill calculator uses the National Weather Service wind chill formula to estimate how cold it feels when wind is factored in. Wind chill is only defined for temperatures at or below 50°F (10°C) and wind speeds above 3 mph.
Where T is air temperature in °F and V is wind speed in mph. Toggle between US and metric units. Results are shown in both °F and °C.
Frostbite can occur in under 30 minutes when the wind chill falls below -18°F (-28°C). At wind chills below -40°F (-40°C), frostbite can set in within 5–10 minutes. Always cover exposed skin in extreme cold.
No, wind chill is not the actual air temperature — it is a perceived temperature that describes how cold the wind makes exposed skin feel. Only living beings experience wind chill; it does not affect inanimate objects or the actual air temperature.