Wet Bulb Calculator

Stull (2011) empirical approximation at standard sea-level pressure, restricted here to dry-bulb temperatures 0–50°C and relative humidity 5–99%. This is not WBGT or a health-risk threshold.

Stull (2011) empirical approximation at standard sea-level pressure, restricted here to dry-bulb temperatures 0–50°C and relative humidity 5–99%. This is not WBGT or a health-risk threshold.

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Result

Enter your values and run the tool to see your result.

How to use this tool

Check the units, enter your values, and run the tool. Results follow the assumptions and method below.

Calculation method

Approximate wet-bulb temperaturetemperature*atan(0.151977*sqrt(rh+8.313659))+atan(temperature+rh)-atan(rh-1.676331)+0.00391838*rh^1.5*atan(0.023101*rh)-4.686035

References