Free · Everyday · Weather

Wind Chill Calculator

Calculate the North American wind-chill index from air temperature and wind speed.

  • Checked formula
  • Private in your browser
  • No signup
Calculator inputs

Enter your values

Result

Your calculation

Wind chill
-19.5 °C
Temperature difference
-9.5 °C

The standard index applies at temperatures at or below 10 °C and wind speeds above 4.8 km/h.

How to use this calculator

  1. Enter the values and choose the units that match your situation.
  2. Calculate to see the primary answer and useful conversions.
  3. Review the assumptions before using the result for a project or decision.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.