Rainfall & Humidity Calculator

    Calculate rainfall volume, weight, and evaporation rates. Understand how humidity affects water retention and evaporation.

    Inputs

    About the Rainfall Calculator

    The Rainfall Calculator converts rainfall measurements into volume and weight and estimates evaporation rates based on temperature and humidity. It is a practical tool for irrigation planning, water collection, and understanding precipitation impacts in gardens, farms, or urban areas.

    •Features

    • –Converts rainfall depth into water volume and weight for any area.
    • –Estimates evaporation based on temperature and humidity conditions.
    • –Helps plan irrigation, rainwater harvesting, and water management systems.
    • –Provides insights for gardening, agriculture, and flood risk assessment.

    •How to Use

    1. 1.Enter the rainfall measurement in inches or millimeters.
    2. 2.Provide the area dimensions (sq ft or sq m) to calculate water volume.
    3. 3.Optionally input temperature and humidity to estimate evaporation rates.
    4. 4.Click “Calculate” to get water volume, weight, and estimated evaporation for planning purposes.

    •Conversion Factors

    • –1 inch rainfall = 0.623 gallons/sq ft
    • –Water density = 8.34 lbs/gallon
    • –Evaporation increases with higher temperatures
    • –Humidity reduces evaporation rates

    •Applications

    • Irrigation and crop planning
    • Rainwater harvesting and water storage systems
    • Garden and lawn care optimization
    • Flood risk assessment and urban planning
    • Agricultural and environmental research