Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Water Usage
Greywater System Calculator
Estimates daily greywater production from showers, laundry, and sinks and projects how much can be recovered for irrigation. Useful when sizing a greywater system for a home or evaluating its payback potential.
Fill in the required fields to see your result.
Water Usage
Lawn Irrigation Calculator
Estimate the weekly water volume required to irrigate a lawn based on its area, the grass type, and the season. Helps set a realistic irrigation schedule that avoids both under-watering and waste.
Fill in the required fields to see your result.
Key differences
| Greywater System Calculator | Lawn Irrigation Calculator | |
|---|---|---|
| Category | Water Usage | Water Usage |
| Inputs required | 5 | 3 |
| Result | Daily Greywater Available for Reuse (gallons) | Weekly Water Needed (cubic meters) |
| What it does | Estimates daily greywater production from showers, laundry, and sinks and projects how much can be recovered for irrigation. Useful when sizing a greywater system for a home or evaluating its payback potential. | Estimate the weekly water volume required to irrigate a lawn based on its area, the grass type, and the season. Helps set a realistic irrigation schedule that avoids both under-watering and waste. |