Wet Bulb Temperature Calculator

Calculate wet bulb, dew point, vapor pressure, humidity ratio and enthalpy with pressure-aware inputs and explicit model limitations.

Dry bulb, RH & station pressure

This solves a ventilated psychrometric wet-bulb relation numerically. Use actual station pressure when pressure-aware accuracy matters.

Dry-bulb temperature (°C)

Relative humidity (%)

Station pressure (hPa)

Display

Measured wet-bulb temperature also depends on thermometer design, airflow, radiation shielding and wick condition. This is a psychrometric estimate, not an instrument calibration.

Psychrometric Calculator Dew Point Relative Humidity Absolute Humidity Wet Bulb

Wet-bulb state

—Estimated wet bulb

—Dew point

—Vapor pressure

—Wet-bulb depression

Wet Bulb Calculator: Dew Point, Enthalpy & Pressure

Estimate wet-bulb temperature and inspect dew point, humidity ratio, enthalpy and pressure effects with stated assumptions.

Altitude (ft, optional)

Pressure source

One moist-air state, several related properties

Relative humidity, dew point, wet bulb, vapor pressure, absolute humidity and humidity ratio describe different parts of the same moisture state. WebToolArc keeps the selected inputs visible and shows related outputs together instead of treating the terms as interchangeable.

Accuracy boundary

These browser calculations use standard psychrometric approximations. Real measurements can differ because of sensor calibration, station pressure, ventilation, radiation, local gradients and the exact saturation-vapor-pressure formulation. Use calibrated instruments and applicable engineering or meteorological standards when decisions require certified measurements.