How to Use This Calculator
- Enter the current temperature in degrees Fahrenheit (°F)
- Enter the current relative humidity as a percentage (%)
- Click the "Calculate" button to compute the humidity in grains per pound
- View the detailed calculation results including saturation vapor pressure and actual vapor pressure
Understanding Humidity Measurements
Humidity refers to the amount of water vapor present in the air. There are several ways to measure humidity, including:
- Relative Humidity (RH): The percentage of saturation achieved by the air compared to its maximum saturation capacity at the same temperature
- Saturation Vapor Pressure (SVP): The pressure at which water vapor is in thermodynamic equilibrium with its liquid or solid form at a given temperature
- Grains per Pound: A unit of humidity that represents the weight of water vapor per pound of dry air
Applications of This Calculator
This calculator is useful in various fields including:
- AHVAC (Air Handling, Ventilation, Heating, and Conditioning) system design and maintenance
- Meteorology for weather forecasting
- Indoor environmental quality assessment
- Industrial processes requiring controlled humidity levels
- Home weather stations and hygrometers