Absolute Humidity Calculator

Find absolute humidity from temperature and relative humidity.

Absolute humidity (g/m³) 13.815

Formula: AH = 6.112·e^(17.67T/(T+243.5))·RH·2.1674 ÷ (273.15+T)

Step-by-step with your numbers:

1. Values used:

2. Temperature = 25 °C

3. Relative humidity = 60 %

5. Absolute humidity = 13.815g/m³

Did we solve your problem today?

Absolute humidity is the actual mass of water vapour per cubic metre of air.

The math behind it

It combines the saturation vapour pressure (Magnus formula) with relative humidity and air temperature.

25 °C at 60% RH → about 13.8 g/m³.

Absolute vs relative humidity?

Absolute is a fixed mass per volume; relative is a percentage of the maximum possible.