Quickly convert absolute humidity (g/m³) to relative humidity (%) using our online calculator. Understand how much moisture the air contains and how saturated it is at a given air temperature. This tool is essential for meteorology, HVAC, and indoor climate control.
Formula:
Understanding the Conversion Formula
The conversion from Absolute Humidity (AH) to Relative Humidity (RH) involves calculating the Actual Vapor Pressure (AVP) from AH and Air Temperature (T), and comparing it to the Saturation Vapor Pressure (SVP) at that same temperature. The primary formula is:
Relative Humidity (%) = (Actual Vapor Pressure / Saturation Vapor Pressure) × 100%
Where:
- Actual Vapor Pressure (AVP): The partial pressure exerted by water vapor in the air, derived from Absolute Humidity and Air Temperature.
- Saturation Vapor Pressure (SVP): The maximum partial pressure of water vapor that air can hold at a given Air Temperature.
Both AVP and SVP are crucial intermediate values calculated from your inputs.