Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Environment
Household Water Usage Calculator
Estimate daily household water usage based on showering, dishwasher and laundry loads, household size, and appliance age. Use it to spot the biggest water consumers in your home and prioritize fixture upgrades or behaviour changes.
Climate
Rainwater Harvesting Calculator
Estimate how many gallons of rainwater your roof can collect each year and how much you could save on your water bill. Ideal for homeowners planning a rain barrel or cistern system.
Key differences
| Household Water Usage Calculator | Rainwater Harvesting Calculator | |
|---|---|---|
| Category | Environment | Climate |
| Inputs required | 5 | 4 |
| Result | Daily Water Usage (gallons) | Annual Water Cost Savings ($) |
| What it does | Estimate daily household water usage based on showering, dishwasher and laundry loads, household size, and appliance age. Use it to spot the biggest water consumers in your home and prioritize fixture upgrades or behaviour changes. | Estimate how many gallons of rainwater your roof can collect each year and how much you could save on your water bill. Ideal for homeowners planning a rain barrel or cistern system. |