Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Climate
Wind Chill Calculator
Calculate the wind chill temperature using the NWS/Environment Canada 2001 formula based on air temperature and wind speed. Use it to assess frostbite risk and decide whether outdoor exposure is safe in cold weather.
Fill in the required fields to see your result.
Climate
Heat Index Calculator
Compute the 'feels-like' temperature when high air temperature is combined with humidity, using the National Weather Service Rothfusz regression. Use it to assess heat stress, plan outdoor activity, and trigger safety precautions in hot weather.
Fill in the required fields to see your result.
Key differences
| Wind Chill Calculator | Heat Index Calculator | |
|---|---|---|
| Category | Climate | Climate |
| Inputs required | 2 | 2 |
| Result | Wind Chill Temperature (°F) | Heat Index (°F) |
| What it does | Calculate the wind chill temperature using the NWS/Environment Canada 2001 formula based on air temperature and wind speed. Use it to assess frostbite risk and decide whether outdoor exposure is safe in cold weather. | Compute the 'feels-like' temperature when high air temperature is combined with humidity, using the National Weather Service Rothfusz regression. Use it to assess heat stress, plan outdoor activity, and trigger safety precautions in hot weather. |