Wind Chill Calculator
Calculate wind chill from temperature and wind speed — how cold it really feels.
Why wind makes cold bite
Wind chill is how cold the air feels once wind is taken into account, and it can be dramatically lower than the thermometer reading. This calculates it from the temperature and wind speed, so on a cold, windy day you know how cold it will actually feel — and, more importantly, how quickly exposed skin is at risk.
Enter the temperature and wind speed, and see the wind chill.
It is about heat loss, not colder air
The physics is worth understanding: wind does not make the air itself colder, it strips away the thin layer of warmth your body maintains around your skin and speeds up heat loss, so you cool faster and feel colder. This matters beyond comfort — at low temperatures a strong wind can shorten the time to frostbite from a long while to mere minutes, which is why cold-weather warnings quote wind chill rather than the raw temperature. It is a genuine safety figure, not just a comfort one.
Frequently asked questions
Does wind chill mean the air is colder?
No — wind does not lower the air temperature. It strips away your body's warm layer and speeds heat loss, so you feel colder and cool faster.
Why do cold-weather warnings use wind chill?
Because at low temperatures strong wind can cut the time to frostbite dramatically, making the feels-like figure the real safety measure.
Is anything uploaded?
No. The calculation happens in your browser.