How the Wind Chill Calculator works.
wind chill °F = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275TV^0.16T is Fahrenheit and V is miles per hour; output is also converted to Celsius.
Worked example for the Wind Chill Calculator.
At 0 °F with wind at 15 mph, the NOAA/NWS formula gives a wind chill near −19.4 °F.
How to read this result.
Wind chill estimates the equivalent cooling effect on exposed skin from low air temperature and wind.
How this tool gets the answer
wind chill °F = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275TV^0.16. T is Fahrenheit and V is miles per hour; output is also converted to Celsius. Wind chill estimates the equivalent cooling effect on exposed skin from low air temperature and wind.
A useful example
At 0 °F with wind at 15 mph, the NOAA/NWS formula gives a wind chill near −19.4 °F. A quick way to verify the calculation is: Normalize to °F and mph, apply the wind-speed exponent 0.16 in the NWS equation, and convert the apparent temperature back to Celsius.
What the result tells you
Wind chill estimates the equivalent cooling effect on exposed skin from low air temperature and wind. Temperature may be entered in Fahrenheit or Celsius and wind in mph or km/h; the official US formula is evaluated with °F and mph.
Where the answer can go wrong
The formula applies at 50 °F or colder and wind above 3 mph; warmer or calmer inputs receive an applicability error. Sun, shelter, wet clothing, exposure duration, activity, individual health, and local warnings are not represented; frostbite risk requires official guidance.
Privacy and practical use
The calculation runs locally in your browser and FigureNest does not send the entered values to a calculation service. Keep the source value and its unit with any result you save so you can reproduce the calculation later.
Inputs and edge cases to check.
The formula applies at 50 °F or colder and wind above 3 mph; warmer or calmer inputs receive an applicability error.
What this tool does not include.
Sun, shelter, wet clothing, exposure duration, activity, individual health, and local warnings are not represented; frostbite risk requires official guidance.
Reference guidance and methodology.
Wind Chill Calculator questions.
What does the Wind Chill Calculator do?
Estimate NOAA/NWS wind chill from cold air temperature and wind speed.
How can I check the result?
Normalize to °F and mph, apply the wind-speed exponent 0.16 in the NWS equation, and convert the apparent temperature back to Celsius.
Which units and assumptions matter?
Temperature may be entered in Fahrenheit or Celsius and wind in mph or km/h; the official US formula is evaluated with °F and mph. Sun, shelter, wet clothing, exposure duration, activity, individual health, and local warnings are not represented; frostbite risk requires official guidance.
Are the entered values sent or stored?
No. The calculation runs locally in your browser and FigureNest does not send or store calculator inputs.