Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Plumbing
Water Heater Size Calculator
Estimates the recommended water heater tank capacity in gallons based on household size and hot water usage habits. Use it when purchasing a new water heater or upgrading to match a growing household's demand.
Fill in the required fields to see your result.
Plumbing
Grease Trap Size Calculator
Determines the required grease trap (interceptor) capacity in gallons based on the number of connected fixtures, their individual flow rates, and the required grease retention time. Used by plumbers and kitchen designers for code-compliant commercial kitchen installations.
Fill in the required fields to see your result.
Key differences
| Water Heater Size Calculator | Grease Trap Size Calculator | |
|---|---|---|
| Category | Plumbing | Plumbing |
| Inputs required | 2 | 3 |
| Result | Recommended Capacity (gallons) | Required Capacity (gallons) |
| What it does | Estimates the recommended water heater tank capacity in gallons based on household size and hot water usage habits. Use it when purchasing a new water heater or upgrading to match a growing household's demand. | Determines the required grease trap (interceptor) capacity in gallons based on the number of connected fixtures, their individual flow rates, and the required grease retention time. Used by plumbers and kitchen designers for code-compliant commercial kitchen installations. |