Physics

Absolute Humidity Calculator

Find absolute humidity from temperature and relative humidity.

Calculated Output

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 Breakdown

1. Values used:

2. Temperature = 25 °C

3. Relative humidity = 60 %

5. Absolute humidity = 13.815g/m³

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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.