Humidity Converter
Convert between relative humidity, absolute humidity, dew point, and more
Humidity Converter & Calculator
Calculate and convert between different humidity measures at a given temperature.
Humidity Measurements:
Absolute Humidity
Mass of water vapor per volume of air
Specific Humidity
Mass of water vapor per mass of moist air
Dew Point
Temperature at which air becomes saturated
Mixing Ratio
Mass of water vapor per mass of dry air
Vapor Pressure
Pressure exerted by water vapor in air
Relative Humidity
Percent of maximum possible humidity
About these humidity measures:
Relative Humidity (RH) is the most common measure, expressing the amount of water vapor as a percentage of what the air could hold at the current temperature.
Dew Point is the temperature at which air becomes saturated and condensation begins. A higher dew point feels more humid.
Absolute Humidity and Specific Humidity are mass-based measures used in scientific and HVAC applications.
About the Humidity Converter
Convert between relative humidity, absolute humidity, dew point, and more All conversions run instantly in your browser and nothing you enter is sent to a server.
Common Conversion Formulas
| From | To | Formula |
|---|---|---|
| Relative Humidity (RH%) | Absolute Humidity (g/m³) | Complex equation based on temperature |
| Dew Point (°C) | Temperature (T), Relative Humidity (RH%) | Td = 243.04 × α / (17.625 - α) where α = ln(RH/100) + 17.625 × T/(243.04 + T) |
| Specific Humidity (g/kg) | Absolute Humidity (g/m³), Air Density (ρ) | Specific Humidity = Absolute Humidity / ρ |