Compare calculators
Both calculators run independently β 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
Water Meter Sizing Calculator
Determines the appropriate water meter size (in inches) for a property by comparing peak flow demand against the meter's rated capacity at the available line pressure. Use it during new construction or meter upgrade planning.
Fill in the required fields to see your result.
Key differences
| Septic Tank Sizing Calculator | Water Meter Sizing Calculator | |
|---|---|---|
| Category | Plumbing | Plumbing |
| Inputs required | 4 | 4 |
| Result | Minimum Tank Size (gallons) | Recommended Meter Size (inches) |
| 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. | Determines the appropriate water meter size (in inches) for a property by comparing peak flow demand against the meter's rated capacity at the available line pressure. Use it during new construction or meter upgrade planning. |