This calculator figures out what the temperature actually feels like based on how windy it is and the current air temperature.

Wind Chill Calculator · responsive & interactive

🌬️ Wind chill NOAA formula

Feel the difference · auto °F/°C · mph/km/h/m/s

🌡️ Temperature

💨 Wind speed

°F wind chill

°C wind chill

❄️ Cold

❄️ What is wind chill?

Wind chill is the perceived temperature on exposed skin caused by the combination of cold air and wind. It represents how cold people feel, not the actual thermometer reading.

🌀 How wind chill works

Wind accelerates heat loss from the body by constantly removing the thin layer of warm air near the skin. The stronger the wind, the faster heat is carried away.

📐 Formula & units

WC (°F) = 35.74 + 0.6215·T – 35.75·(V^0.16) + 0.4275·T·(V^0.16) (T in °F, V in mph). Our tool automatically converts Celsius, km/h, and m/s. Valid for T between -50°F and +50°F, wind > 3 mph.

⚠️ Why it matters

Wind chill helps anticipate frostbite and hypothermia risks. Athletes, outdoor workers, and travellers use it to dress appropriately and limit exposure.

📋 Example

Air -5°C (23°F) with 30 km/h wind (18.6 mph) → wind chill ≈ 8°F (-13°C) → frostbite possible in ~30 minutes.

Frequently Asked Questions

🌬️ What is wind chill?

Wind chill is the "feels‑like" temperature for humans, combining air temperature and wind speed. It only applies below 50°F (10°C) and wind > 3 mph.

🧮 How is it calculated in this tool?

We use the official NOAA/NWS formula. If you enter °C or km/h/m/s, the script converts them to °F and mph, computes wind chill, then converts back to °C for display.

⏱️ When does frostbite occur?

Frostbite can happen in 30 minutes when wind chill falls below -20°F (-29°C). At -40°F (-40°C) frostbite can occur in 5–10 minutes. Our risk message reflects these thresholds.