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Wind Chill Calculator

Calculate how cold it feels when wind is factored with air temperature. Get frostbite risk assessments and safety recommendations based on National Weather Service formulas.

Wind Chill Calculator

Air Temperature

Wind Speed

Input Summary

Temperature: 32° F

Wind Speed: 15 mph

Wind Chill Results

21.6°F

Wind Chill Temperature

(-5.8°C • 267.4K)

Feels 10.4°F colder than air temperature
Danger Level: CAUTION

Increasing danger - flesh may freeze with prolonged exposure

Wind Chill in Different Units

21.6°
Fahrenheit
-5.8°
Celsius
267.4
Kelvin
Safety Recommendations
    Temperature Comparisons

    Similar to a cool autumn day



    What is Wind Chill Calculator?

    Wind chill measures how cold air feels on human skin when factoring in wind speed. As wind increases, it carries heat away from your body more quickly, making the air feel much colder than the actual temperature. This calculator uses the official formula developed by the National Weather Service (NWS).

    How Wind Chill Works

    Your body warms the air immediately around your skin. In still air, this creates an insulating layer. Wind removes this warmed air and replaces it with cold air, increasing heat loss. The stronger the wind, the more heat is carried away, making you feel colder.

    NWS Wind Chill Formula

    Wind Chill = 35.74 + 0.6215×T - 35.75×V^0.16 + 0.4275×T×V^0.16

    Where:

    • T = Air temperature (°F)
    • V = Wind speed (mph)
    • Valid for T ≤ 50°F and V ≥ 3 mph

    Frostbite Risk Levels

    Low Risk (Above 15°F)

    • • Little danger for properly clothed person
    • • Normal outdoor activities safe
    • • Standard winter clothing adequate

    High Risk (Below -15°F)

    • • Exposed flesh freezes in 10 minutes
    • • Extreme danger to health
    • • Avoid prolonged outdoor exposure

    Practical Applications

    • Weather forecasting and public safety warnings
    • Outdoor activity planning and safety
    • Construction and industrial work scheduling
    • Agricultural frost protection planning
    • Winter sports and recreation safety
    • Emergency preparedness and response
    • HVAC and building energy calculations
    • Transportation and logistics planning

    Safety Guidelines

    Hypothermia Warning Signs:

    • Uncontrollable shivering
    • Loss of coordination
    • Confusion or slurred speech
    • Drowsiness or exhaustion

    If you experience these symptoms, seek warm shelter immediately and get medical help.



    FAQ - Wind Chill Calculator

    Wind chill represents the cooling effect of wind on human skin. Above 50°F (10°C), the cooling effect is minimal and doesn't significantly impact human comfort or safety. The formula is specifically designed for cold weather conditions.