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Wind Chill Calculator

Estimate wind chill from air temperature, temperature unit, wind speed with the Wind Chill Calculator.

WIND CHILL21.248293 °F

NWS equation using 30.00 °F and 10.00 mph.

Estimate based on the values shown
MethodNWS wind-chill equation after normalizing temperature to °F and wind to mph.

Before you use the result

Check the entered units and assumptions before using the result for purchasing, construction, engineering, or safety decisions.

Sources

EDITORIAL NOTES

Using the Wind Chill Calculator responsibly

Page-specific guidance based on this calculator’s implemented method, inputs, and known limits.

What this result is useful for

Wind chill combines air temperature and wind speed to describe how cold exposed skin may feel under the supported weather-service model. It does not report the actual temperature of objects and is not a complete personal safety assessment.

Assumptions and limits

The formula is valid only within its stated temperature and wind-speed range and assumes exposed skin. Sun, shelter, wet clothing, activity, age, circulation, and exposure time can materially change risk.

How to check the result

Confirm temperature and wind units and compare the inputs with the formula’s supported range. Use official local weather warnings and exposure guidance for decisions; do not rely on a calculated value alone when frostbite or hypothermia is possible.

Content review: August 30, 2026
CALCULATOR GUIDE

How to use the Wind Chill Calculator

Estimate wind chill from air temperature, temperature unit, wind speed with the Wind Chill Calculator. Use it to check a practical estimate, paying close attention to the selected units and assumptions.

Step by step

  1. For the Wind Chill example, enter air temperature, temperature unit, wind speed, wind unit, result unit. Keep each value in the unit displayed beside its field.
  2. Review the selected Wind Chill workflow and inputs, then read wind chill in the result panel.
  3. Change one Wind Chill assumption at a time to compare scenarios. Use Reset to restore this tool's worked example values.

How the calculation works

NWS wind-chill equation after normalizing temperature to °F and wind to mph.

Worked example

To reproduce the Wind Chill worked example, reset the calculator. Use air temperature 30; temperature unit °F; wind speed 10; wind unit Mph; result unit °F. The result is wind chill of 21.248293 °F. NWS equation using 30.00 °F and 10.00 mph. Review the displayed units before comparing the result.

Understanding the result

The Wind Chill reports wind chill. Use it to check a practical estimate, paying close attention to the selected units and assumptions. Check the entered units and assumptions before using the result for purchasing, construction, engineering, or safety decisions.

How to check the answer

Check the Wind Chill result by reversing the conversion or recomputing wind chill from air temperature, temperature unit, wind speed. For construction, electrical, weather, or purchasing decisions, compare the result with the applicable specification or professional guidance.

Common questions

What does the Wind Chill calculate?

Estimate wind chill from air temperature, temperature unit, wind speed with the Wind Chill Calculator.

Which inputs does the Wind Chill example use?

The worked example uses air temperature, temperature unit, wind speed, wind unit, result unit. Other workflows can show different fields. Keep the chosen workflow and units with the result when comparing calculations.

Is the Wind Chill result exact?

Check the entered units and assumptions before using the result for purchasing, construction, engineering, or safety decisions. Recheck air temperature, temperature unit, wind speed and use wind chill only for a decision where that level of precision is appropriate.

Formula tests, limits, and sources reviewed September 1, 2026. Guide examples updated October 12, 2026.
INTERPRET THE RESULTRead the other guideCheck assumptions, limitations and comparison methods →
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