Wind Chill Calculator
Calculate wind chill temperature and frostbite risk.
Weather Conditions
°F
mph
Wind Chill
Wind Chill
23.7°F
-4.6°C
Conditions:
Temperature: 32°F
Wind Speed: 10 mph
About This Calculator
The Wind Chill Calculator calculates the "feels like" temperature when wind speed is combined with air temperature. Wind chill is the perceived decrease in temperature felt by the body when exposed to wind, making it feel colder than the actual air temperature.
Wind chill is only applicable when the temperature is below 50°F (10°C) and wind speed is above 3 mph. Enter the temperature and wind speed to calculate the wind chill temperature and see frostbite risk warnings.
Formula & Calculation Method
Wind Chill Formula:
US/Canada Formula:
T_wc = 35.74 + 0.6215×T - 35.75×V^0.16 + 0.4275×T×V^0.16
Where:
T_wc = Wind chill temperature (°F)
T = Air temperature (°F)
V = Wind speed (mph)
Conditions:
Valid for: T ≤ 50°F and V ≥ 3 mph
Based on heat loss from exposed skin
The wind chill formula calculates the equivalent temperature that would produce the same heat loss rate in calm conditions. It's based on the rate of heat loss from exposed skin and helps assess the risk of frostbite and hypothermia.
How to Use This Calculator
- Enter Temperature: Input the air temperature in Fahrenheit or Celsius.
- Enter Wind Speed: Input the wind speed in miles per hour.
- View Results: See the wind chill temperature and frostbite risk warnings.
- Take Precautions: Use the wind chill value to dress appropriately and protect against frostbite.
Frequently Asked Questions
What is wind chill?
Wind chill is the "feels like" temperature when wind speed is combined with air temperature. Wind increases heat loss from the body, making it feel colder than the actual air temperature. It's only applicable in cold conditions (below 50°F).
When is wind chill applicable?
Wind chill is only valid when the air temperature is 50°F (10°C) or below and wind speed is 3 mph or higher. At higher temperatures, wind actually helps cool the body through evaporation rather than increasing heat loss.
What is the risk of frostbite?
Frostbite risk increases as wind chill decreases. Below -50°F: extreme risk (frostbite in less than 5 minutes). Below -35°F: very dangerous (frostbite in less than 10 minutes). Below -20°F: dangerous (frostbite in less than 30 minutes).
How can I protect against wind chill?
Protect against wind chill by: dressing in layers, covering exposed skin, wearing wind-resistant outerwear, avoiding prolonged exposure, and staying dry. Wind chill affects exposed skin, so covering up is essential.
Calculator by
NumCalculators Editorial Team
Multi-disciplinary Expert Team