EAI WebApp v3.5
Weather/ NOTAMs & E6B Tools

- 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.

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

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

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

See the image below for a graphical conversion scale.

Dew Point Conversion

Become our Patron