Dew Point Calculator

Calculate dew point temperature or relative humidity from air temperature and moisture content using the Magnus-Tetens formula.

How to use this calculator

1. Select mode.
2. Enter temperature and humidity.
3. Read dew point and comfort level.

Formula & method

Magnus-Tetens Formula

γ(T, RH) = (17.625×T)/(243.04+T) + ln(RH/100)

Moisture approximation.

Example

25°C at 50% RH = 13.9°C dew point.

Key insights

• Dew point above 65°F (18°C) feels muggy.

How to interpret your result

Comfort Level

Mugginess assessment.

Frequently asked questions

Why dew point over RH?

Dew point is an absolute moisture measurement.

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