Temperature Relative Humidity Conversions - Experimental Aircraft Info

- Dew Point & Relative Humidity -

These calculators convert between these units and give a rough estimate of cloud base (AGL) and freezing level.
Relative humidity is helpful assessing the effects of high humidity on humans (Heat Index) and estimating cloud bases.

To obtain Dew Point from Relative Humidity, use this calculator.

See the image below for a graphical conversion scale.

Relative Humidity
Temp (OAT)	°F °C
Dew Point	@
QNH	hPa (mb) inHg

Relative Humidity	%
Act. Mixing Ratio	g/kg
Wet-Bulb Temp	°C
Est. Cloud Temp	°C
Est. Cloud Base	Feet
Est. Cloud Ice Lvl.	Feet

Dew Point
Temp (OAT)	°F °C
Rel. Humidity	%
QNH	hPa (mb) inHg

Dew Point °F	°C
Wet-Bulb Temp	°C
Est. Cloud Temp	°C
Est. Cloud Base	Feet
Est. Cloud Ice Lvl.	Feet