Free interactive tool
Wind Chill Calculator
The Environment Canada formula for what the cold actually feels like.
Feel what wind does to a temperature
Set the air temperature and the wind; the felt temperature follows the Environment Canada formula.
Wind chill is heat-loss arithmetic: moving air strips the warm boundary layer off skin, so the same thermometer reading can be a stroll or an emergency.
- Hold −5° and raise the wind from 5 to 50 km/h.
- Find a combination where exposed skin risks frostbite within 30 minutes.
Wind strips away the thin layer of warmth your body maintains, so moving air makes the same thermometer reading feel far colder. This tool computes the standard Environment Canada wind chill: 13.12 + 0.6215T − 11.37v⁰·¹⁶ + 0.3965Tv⁰·¹⁶.
Slide the wind at a fixed temperature to see how quickly a manageable day becomes a frostbite advisory.
At what wind chill does frostbite threaten?
Below about −28 exposed skin can freeze within 30 minutes; below −40, within 10.
Does wind chill affect cars or pipes?
No — it models heat loss from warm skin. Objects just reach air temperature faster.