Feels-Like Temperature Calculator
How cold or hot does it feel?
Result
How it is calculated
The tool picks a formula from the conditions. At or below 10 °C with wind above 4.8 km/h it uses wind chill: 13.12 + 0.6215·T - 11.37·v^0.16 + 0.3965·T·v^0.16, with T in °C and wind v in km/h. At or above 27 °C with a humidity value it uses the Rothfusz heat-index regression, computed in °F and converted back to °C. In between, or when the needed wind or humidity is missing, the feels-like value simply equals the air temperature. Both formulas are empirical fits meant for ordinary weather, so extreme values are less reliable. Results show feels-like and actual temperature to two decimals.
Worked example
Air temperature is 32 °C with 70% relative humidity. Because it is above 27 °C, the heat index applies. In Fahrenheit, 32 °C is 89.6 °F. Putting 89.6 and 70 into the regression gives about 104.7 °F, which converts back to 40.41 °C. The tool shows a feels-like value of 40.41 °C against an actual temperature of 32.00 °C: the humidity makes it feel about 8 degrees hotter.
Common mistakes
- Entering wind in mph or m/s. The wind-chill formula here expects km/h.
- Leaving humidity empty on a hot day and assuming heat index was applied; without it the result equals the air temperature.
- Expecting wind chill above 10 °C or heat index below 27 °C; outside those ranges the formulas are not used.
- Entering temperature in °F. The input is °C.
About this calculator
This calculator estimates how the air actually feels to your body rather than what the thermometer reads, using two different formulas depending on conditions: wind chill, which accounts for how moving air strips heat away from exposed skin in cold weather, and the heat index, which accounts for how high humidity prevents sweat from evaporating and cooling you down in hot weather.
It's the same 'feels like' or 'real feel' figure shown by weather services and forecasters, and it matters because the actual air temperature alone can be misleading — 30°C at low humidity is far more tolerable than 30°C at 90% humidity, and -5°C in calm air is far milder than -5°C with a strong wind. Outdoor workers, athletes, event planners and parents dressing kids for school use it to judge frostbite or heat-exhaustion risk more accurately than the raw temperature alone.
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