Wind Chill Calculator
Enter temperature and wind speed. The calculator uses the international Environment Canada formula.
Wind chill temperature (feels like)
Chilling effect of wind
Formula: Environment Canada / WMO. Valid when T ≤ 10°C and wind > 4.8 km/h.
Wind Chill Calculator – How Cold Does It Really Feel?
The wind chill calculator computes the apparent temperature — how cold the air actually feels on exposed skin due to wind. Even when the thermometer shows a certain temperature, wind makes it feel significantly colder.
The Wind Chill Formula
The calculator uses the Environment Canada / WMO formula (2001), which is the international standard:
Tw = 13.12 + 0.6215×T − 11.37×V^0.16 + 0.3965×T×V^0.16
Where T = air temperature (°C) and V = wind speed (km/h). The formula applies when T ≤ 10°C and wind speed > 4.8 km/h.
Wind Chill Reference Table
| Temperature | Wind 10 km/h | Wind 20 km/h | Wind 40 km/h |
|---|---|---|---|
| 0 °C (32 °F) | -3 °C (27 °F) | -5 °C (23 °F) | -8 °C (18 °F) |
| -10 °C (14 °F) | -15 °C (5 °F) | -18 °C (0 °F) | -22 °C (-8 °F) |
| -20 °C (-4 °F) | -27 °C (-17 °F) | -31 °C (-24 °F) | -37 °C (-35 °F) |
| -30 °C (-22 °F) | -39 °C (-38 °F) | -44 °C (-47 °F) | -51 °C (-60 °F) |
Frostbite Risk
- −10 °C → −27 °C wind chill – Risk increases with prolonged exposure
- −28 °C → −39 °C – Frostbite possible in 10–30 minutes
- −40 °C or below – Frostbite risk in under 2 minutes
Source: Environment Canada – Wind Chill
See also
- Temperature Converter – Celsius, Fahrenheit, and Kelvin
- BMR Calculator – Calculate your basal metabolic rate