KLOORAHeat Index Calculator
Find the feels-like temperature (heat index) from air temperature and humidity.
Quick answer: Heat Index Calculator: Find the feels-like temperature (heat index) from air temperature and humidity. Everything runs in your browser, so nothing you enter is uploaded or stored.
How to use Heat Index Calculator
- Enter your values in the fields.
- The results update instantly as you type.
- Note or copy the numbers you need.
Features
- Instant results
- Free, no signup
- Runs in your browser, nothing is uploaded
- Works on phone and desktop
Frequently asked questions
What is the heat index?
It is how hot it feels when humidity is combined with air temperature.
When is it dangerous?
Above about 41 C feels-like, heat cramps and exhaustion become likely. Stay in shade and drink water.
Is the Heat Index Calculator free?
Yes. It is free, needs no signup and works on any device.