Rainwater Calculator
Determine your potential harvest yield.
Roof Area
Area Unit
Square Feet (sq ft)
Square Meters (m²)
Rainfall Depth
Depth Unit
Inches (in)
Millimeters (mm)
Surface Material
Metal (0.95)
Concrete (0.90)
Tile (0.90)
Asphalt Shingles (0.85)
Gravel (0.50)
System Efficiency (%)
Estimated Yield
0
gal
0
liters