Relative Humidity Calculator

Your details

Choose which quantity to calculate. The other two are inputs.
The dry-bulb air temperature (ambient temperature).
°C
The temperature at which air becomes saturated and water vapor begins to condense.
°C
Relative HumidityComfortable
47.3%

Percent of saturation at the given air temperature

Dew Point13
Air Temperature25
Comfort levelComfortable
Absolute Humidity11.33g/m³
47.3 %
Very Dry<20Dry20-30Comfortable30-50Slightly Humid50-60Humid60-70Very Humid70+

Relative humidity is 47.3% - Comfortable.

  • The dew point is 13.0 °C, which is 12.0 degrees below the air temperature.
  • This humidity level falls within the ideal indoor comfort range of 30-50% recommended by ASHRAE.
  • Absolute humidity is 11.33 g/m³, the actual mass of water vapor in each cubic metre of air.

Next stepMonitor humidity seasonally: indoor air tends to dry out in winter when heating is on, and can become too humid in summer.

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