Absolute humidity calculator

Calculate absolute humidity with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use absolute humidity to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Air temperature (°C)
20
Relative humidity (%)
50
Absolute humidity (g/m³)
8.637497

Try another scenario

Air temperature (°C)
22
Relative humidity (%)
50
Absolute humidity (g/m³)
9.701862
Calculation method

Calculation method

Absolute humidity (g/m³)

Ideal water vapor: rho=216.7 × vapor pressure hPa/(T+273.15); e=6.112 exp(17.67T/(T+243.5)) RH/100.

Symbols and units
a
Air temperature (°C)
b
Relative humidity (%)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Calculation uses the entered values and stated mathematical model; quantities must use the labelled units. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Ideal water vapor: rho=216.7 × vapor pressure hPa/(T+273.15); e=6.112 exp(17.67T/(T+243.5)) RH/100.
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Further reading

Method reference ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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