Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Plumbing
Sump Pump Sizing Calculator
Determine the minimum sump pump capacity (GPH) needed to protect your basement given its area, local peak rainfall, soil drainage, and discharge lift height. Use it before purchasing a pump or when upgrading an undersized unit.
Fill in the required fields to see your result.
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.
Key differences
| Sump Pump Sizing Calculator | Septic Tank Sizing Calculator | |
|---|---|---|
| Category | Plumbing | Plumbing |
| Inputs required | 4 | 4 |
| Result | Required Pump Capacity (GPM) | Minimum Tank Size (gallons) |
| What it does | Determine the minimum sump pump capacity (GPH) needed to protect your basement given its area, local peak rainfall, soil drainage, and discharge lift height. Use it before purchasing a pump or when upgrading an undersized unit. | 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. |