⚛️ Science

Wind Chill Calculator

Calculate wind chill temperature from air temperature and wind speed.

°F
mph

Results

Wind chill
6.2 °F
In Celsius
-14.3 °C

📊 Wind Chill Calculator chart

How the wind chill changes as the wind speed varies. The orange dot marks your current value.

What is the Wind Chill Calculator?

Calculate wind chill temperature from air temperature and wind speed. Wind chill estimates how cold it feels on exposed skin when wind speeds up heat loss, helping you dress for winter conditions.

Wind Chill Calculator – free online science tool illustration
Wind Chill Calculator — free, exact and private.

How to use the Wind Chill Calculator

  1. Enter your air temperature, your wind speed.
  2. Results update automatically as you type; you can also press Calculate.
  3. Read the output: wind chill, in celsius.
  4. Use the 📊 chart to see the result visually, then copy or share it.

Formula and method

WC = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275TV^0.16 (NWS)

Worked example

With air temperature = 20 °F, wind speed = 15 mph, the Wind Chill Calculator returns wind chill: 6.2 °F; in celsius: -14.3 °C.

Where the Wind Chill Calculator helps in real life

The forecast is −5 °C with a 30 km/h wind. The calculator shows a wind chill well below −10 °C, which affects how quickly exposed skin gets cold.

A parent is deciding whether children should play outside during a winter recess. Checking wind chill helps judge how long they can stay out.

Common mistakes to avoid

  • Using it above about 10 °C (50 °F), where the formula is not valid.
  • Ignoring wind speed and checking only the thermometer.
  • Assuming cars and pipes cool below the air temperature.
  • Forgetting that wet clothing increases heat loss.

💡 Practical tip: Wind chill affects people and animals, not objects — a car will not get colder than the actual air temperature.

Illustration: a science lab bench with flasks and a monitor showing a graph
Wind Chill Calculator in everyday work — illustration.

Tips for better results

  • Dress in layers with a windproof outer layer.
  • Cover exposed skin when wind chill is very low.
  • Check official cold-weather warnings in your area.

Frequently asked questions

What does the Wind Chill Calculator do?

Calculate wind chill temperature from air temperature and wind speed.

How is it calculated?

The Wind Chill Calculator uses this method: WC = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275TV^0.16 (NWS).

Can you show an example?

With air temperature = 20 °F, wind speed = 15 mph, the Wind Chill Calculator returns wind chill: 6.2 °F; in celsius: -14.3 °C.

Is the Wind Chill Calculator accurate?

Yes. It uses standard formulas and exact constants, and the results are verified by our automated test suite. Values are displayed to up to 12 significant digits.

Is this tool free and private?

Yes — the Wind Chill Calculator is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.

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