Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Plumbing
Plumbing Fixture Unit Calculator
Calculates total plumbing fixture units (FU) for a building by summing standardized load values for toilets, sinks, showers, and tubs. Use it to size drain, waste, and vent (DWV) or water supply piping per code.
Fill in the required fields to see your result.
Plumbing
Pipe Expansion Joint Calculator
Calculates how much a pipe will elongate or contract due to a temperature change, accounting for the thermal expansion coefficient of steel, copper, or aluminum. Essential for sizing expansion joints and loops in piping systems.
Fill in the required fields to see your result.
Key differences
| Plumbing Fixture Unit Calculator | Pipe Expansion Joint Calculator | |
|---|---|---|
| Category | Plumbing | Plumbing |
| Inputs required | 4 | 3 |
| Result | Total Fixture Units (FU) | Expansion (inches) |
| What it does | Calculates total plumbing fixture units (FU) for a building by summing standardized load values for toilets, sinks, showers, and tubs. Use it to size drain, waste, and vent (DWV) or water supply piping per code. | Calculates how much a pipe will elongate or contract due to a temperature change, accounting for the thermal expansion coefficient of steel, copper, or aluminum. Essential for sizing expansion joints and loops in piping systems. |