Heat Index Calculator vs Wind Chill Calculator
Two calculators for the same neighbourhood of questions. Here is what each measures, what you feed in, and where you'd reach for one over the other.
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.
- Answers
- Heat Index (°F)
- Inputs
- Air Temperature, Relative Humidity
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.
- Answers
- Wind Chill Temperature (°F)
- Inputs
- Air Temperature, Wind Speed
At a glance
| Heat Index Calculator | Wind Chill Calculator | |
|---|---|---|
| Category | Climate | Climate |
| Answers | Heat Index | Wind Chill Temperature |
| Inputs | 2 | 2 |
| Result unit | °F | °F |
When to use each
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.
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.