Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Environment
Rainwater Harvesting Calculator
Estimate how many gallons of rainwater your roof can collect each year and size your storage tank accordingly. Ideal for homeowners planning irrigation systems, off-grid setups, or drought resilience.
Fill in the required fields to see your result.
Environment
Rainwater Harvesting Calculator
Calculate how many gallons of rainwater your roof can collect each year based on area, local rainfall, and system efficiency. Use it to size a storage tank or estimate irrigation potential.
Fill in the required fields to see your result.
Key differences
| Rainwater Harvesting Calculator | Rainwater Harvesting Calculator | |
|---|---|---|
| Category | Environment | Environment |
| Inputs required | 4 | 4 |
| Result | Required Storage Capacity (gallons) | Annual Water Savings ($) |
| What it does | Estimate how many gallons of rainwater your roof can collect each year and size your storage tank accordingly. Ideal for homeowners planning irrigation systems, off-grid setups, or drought resilience. | Calculate how many gallons of rainwater your roof can collect each year based on area, local rainfall, and system efficiency. Use it to size a storage tank or estimate irrigation potential. |