Wind Chill Calculator
Find the "feels like" temperature from cold and wind speed.
Applies to exposed skin in cold, windy conditions. Cover up, limit exposure, and watch for numbness or pale, hard skin — signs to get warm and seek help.
Why wind makes cold worse
Your body warms a thin layer of air against your skin. Wind keeps sweeping that warmth away, so heat is lost faster and the cold feels far sharper than a still day at the same temperature.
The wind-chill formula combines temperature and wind speed into a single "feels like" figure. It is meant for cold, breezy conditions — roughly 10°C (50°F) and below with a noticeable wind.
The frostbite guide shows how quickly exposed skin is at risk as the wind chill falls. It assumes bare skin, so covering up changes the picture considerably.
At −5°C with a 20 km/h wind, the air feels closer to −11.6°C. Moving air strips away the thin warm layer near your skin, so the cold bites harder than the thermometer suggests.
Staying safe in the cold
As wind chill drops, exposed skin is the first casualty — fingers, ears, nose and cheeks. Layers, windproof outerwear, hats and gloves slow heat loss dramatically. Limit time outside in extreme readings, and head indoors at the first sign of numbness.
Sensible precautions
- Cover exposed skin. The formula assumes bare skin; clothing helps a lot.
- Block the wind. A windproof outer layer matters more than bulk.
- Watch for warning signs. Numbness or pale, waxy skin means warm up now.
This is general information, not medical advice.