30 F, 15 mph
- Celsius
- -7.2070528038 C
- Air temperature
- 30 F
- Wind speed
- 15 mph
The NWS formula is intended for cold temperatures with meaningful wind. Follow local weather alerts for frostbite risk.
Wind Chill Calculator
Use this free wind chill calculator to estimate what cold weather feels like from air temperature and wind speed.
Inputs explained Result checks Example values Runs in your browser
Formula steps
- Use the National Weather Service wind chill equation.
- Raise wind speed to the 0.16 power.
- Combine temperature and wind terms to estimate exposed-skin heat loss.
How to use the Wind Chill Calculator
- Enter air temperature in Fahrenheit and wind speed in miles per hour.
- Press Calculate wind chill to estimate the feels-like cold temperature.
- Use the formula mainly for cold, windy conditions.
- Follow local weather alerts for frostbite and outdoor safety decisions.
What people use it for
Estimate wind chill before going outside.
Compare actual air temperature with feels-like temperature.
Convert the result to Celsius.
Understand wind chill limits and safety notes.
Quick examples
Cold windy day
30 F and 15 mphFeels colder than 30 F
Freezing wind
20 F and 25 mphWind chill estimate
Very cold wind
5 F and 20 mphSevere feels-like estimate
Need the guide or a nearby tool?
Need a slower walkthrough, a related calculator, or the full library? These links keep you close to the task you started.
- How to use the Wind Chill Calculator See slower examples, input meanings, formula notes, result limits, and mistakes to avoid.
- Everyday Tools Browse related calculators and utilities in the same category.
- Calculator and utility guides Find more guides that use real tool inputs and example numbers.
- All free tools Search every live tool, converter, calculator, AI helper, and browser utility.
Frequently asked questions
Plain-language answers about when to use the tool, what it does with your inputs, what to double-check, and how privacy works.
When should I use the Wind Chill Calculator?
Use it when your task matches one of these common needs: Estimate wind chill before going outside. Compare actual air temperature with feels-like temperature. It works best when you already know the measurements, amounts, units, or options the page asks for.
What is the Wind Chill Calculator doing with my inputs?
In plain language: The calculator uses the National Weather Service wind chill equation with air temperature in Fahrenheit and wind speed in miles per hour. The examples on the page are there so you can compare your inputs with a worked example before copying the answer.
What do the main Wind Chill Calculator inputs mean?
Temperature F: the air temperature in degrees Fahrenheit, intended for 50 F or colder. Wind speed mph: the wind speed in miles per hour, intended for speeds above 3 mph. Wind chill: a feels-like estimate for exposed skin in cold, windy weather.
How should I read the Wind Chill Calculator answer?
Read the headline answer, then check the smaller lines beside it. For everyday tools, those lines usually show the distance, time, cost, units, or setting that made the answer change.
What should I double-check before trusting the answer?
The formula is intended for cold temperatures with meaningful wind. Follow local alerts for frostbite and outdoor safety decisions. Also check the unit, scale, mode, and result limit because small input changes can change the answer.
Why does the Wind Chill Calculator reject warm weather?
The NWS wind chill equation is designed for cold air and meaningful wind. Warm-weather comfort uses other ideas, like heat index and dew point.
Does the site save what I enter?
No. The calculator runs in your browser tab. Your recent answers stay only on the page while you use it, and they are not sent to a server.