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Calculation Machine

Wind Chill Calculator

How cold it actually feels in the wind.

Reviewed by James Whitfield · How we check our maths

Your values

ⓘ Live results

Results
Feels like
6.2 °F
In Celsius
-14.3 °C
Difference from air temp
-13.8 °F
Frostbite risk on exposed skin
Low risk

Working

  1. 1T_wc = 35.74 + 0.6215(20) − 35.75(15)^0.16 + 0.4275(20)(15)^0.16 = 6.2 °F

Quick answer

Wind chill uses the 2001 NWS formula and applies at 50°F or below with winds above 3 mph.

The formula

T_wc = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275TV^0.16

Worked example

Worked example

Using the values the calculator loads with.

Inputs

  • Air temperature20 °F
  • Wind speed15 mph

Result

  • Feels like6.2 °F
  • In Celsius-14.3 °C
  • Difference from air temp-13.8 °F
  • Frostbite risk on exposed skinLow risk

How to use the Wind Chill Calculator

  1. 1Enter the air temperature in Fahrenheit.
  2. 2Enter the wind speed in mph.
  3. 3Read the feels-like temperature and frostbite risk.

Frequently asked questions

Does wind chill affect cars or pipes?

No. Wind chill only describes heat loss from exposed skin — objects cool faster but never below the air temperature.

When does the formula apply?

At 50°F or below with wind above 3 mph; outside that range it isn't meaningful.

About this calculator