Absolute Humidity Calculator

Calculate the total mass of water vapor in a given volume of air.

Environmental Conditions

Temperature (T) (°C)

Relative Humidity (%)

Calculation Results

About this calculator

Overview

Absolute humidity is the actual mass of water vapor present in a unit volume of air, regardless of temperature.

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Pro Tips

Absolute humidity doesn't change when temperature changes (unless moisture is added/removed).
Saturation vapor pressure depends strongly on temperature.
Higher temperatures can hold more water vapor.

Fun Facts

"The Sahara Desert has high absolute humidity at times, but very low relative humidity due to the heat."
"In a steam room, absolute humidity can be over 50 g/m³."
"Winter air feels dry because cold air cannot hold much water vapor, leading to low absolute humidity."

Formula: AH = (m_water) / (V_air)