Relative humidity from dew point calculator

Calculate relative humidity with your own figures.

Your numbers

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

Use relative 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
Dew point (°C)
10
Relative humidity (%)
52.541326

Try another scenario

Air temperature (°C)
22
Dew point (°C)
10
Relative humidity (%)
46.465665
Calculation method

Calculation method

Relative humidity (%)

Ratio of Magnus saturation vapor pressures at dew point and air temperature.

Symbols and units
a
Air temperature (°C)
b
Dew point (°C)

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. Ratio of Magnus saturation vapor pressures at dew point and air temperature.
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Further reading

Method reference ↗

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

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