How does the Rainwater Harvesting Calculator work?
The Formula
SqFt x Rainfall(in) x 0.623Example: 1000 sqft x 1 inch rain = 623 gallons.
Frequently Asked Questions
Do I lose some water?
Yes, assume 85-90% efficiency.
Rainwater Harvesting Calculator
Estimate how many gallons of rainwater you can collect from your roof during a storm based on roof footprint and rainfall amount.
#Water#Eco#Home#Garden#Sustainability
Enter values above to see the result.