Rain Collection Calculator

Use this to calculate the water runoff from a roof or similar item.

This Calculator will give you the average water in Gallons available from the runoff of a roof or similar item. Just enter the Length and Width in FEET/INCHES, and the Rain Fall in INCHES.

You will be surprised the amount of water that runs off a roof. Being that I live in a drought area. I am going to setup a collection tank before our so called rainy season.

Note: This Calculator is in FEET, INCHES, and GALLONS only.