What is this calculator?
Estimate the cooling effect of wind using the NWS equation.
What can you use it for?
Use it for practical planning, conversions, measurement or checking the result described here. Estimate the cooling effect of wind using the NWS equation.
How to use it
- Enter air temperature (°f).
- Enter wind speed (mph).
- Select Calculate (or Generate for random tools).
- Read the answer and any additional results below the form. Check the units and the limits of the method.
Formula and method
Wind chill (°F) = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275TV^0.16
T is air temperature in °F and V is wind in mph. The model is used only at or below 50°F with wind above 3 mph.
Worked example
Air temperature (°F): 30, Wind speed (mph): 10. The result is 21.24829326 °F (wind chill).
Assumptions and limits
Valid for temperatures at or below 50°F and wind speeds above 3 mph.
Method references
Frequently asked questions
What inputs does the Wind Chill Calculator need?
Use air temperature (°f), wind speed (mph). Read the answer and any additional results below the form. Check the units and the limits of the method.
What assumptions apply to the Wind Chill Calculator?
Valid for temperatures at or below 50°F and wind speeds above 3 mph.