Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Plumbing
Septic Tank Sizing Calculator
Estimates the minimum septic tank volume (in gallons) needed for a home based on bedroom count, occupants, plumbing fixtures, and daily wastewater generation. Use it when designing or permitting a new septic system.
Fill in the required fields to see your result.
Plumbing
Grease Trap Sizing Calculator
Determine the minimum grease trap size (in gallons) for a commercial kitchen based on sinks, dishwashers, meal volume, kitchen type, and required retention time. Use it when designing or upgrading a kitchen drainage system to meet code.
Fill in the required fields to see your result.
Key differences
| Septic Tank Sizing Calculator | Grease Trap Sizing Calculator | |
|---|---|---|
| Category | Plumbing | Plumbing |
| Inputs required | 4 | 5 |
| Result | Minimum Tank Size (gallons) | Required Capacity (gallons) |
| What it does | Estimates the minimum septic tank volume (in gallons) needed for a home based on bedroom count, occupants, plumbing fixtures, and daily wastewater generation. Use it when designing or permitting a new septic system. | Determine the minimum grease trap size (in gallons) for a commercial kitchen based on sinks, dishwashers, meal volume, kitchen type, and required retention time. Use it when designing or upgrading a kitchen drainage system to meet code. |