Rainwater Collection Calculator in Gallons

Rainwater can be collected from the roofs using the rain water harvesting method. The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area.

Calculate Rainwater Collection in Gallons

square feet
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r = 0.5 * f * a Where, r = Rainwater Collection in Gallons f = Rain Fall a = Area

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