Fixture Requirements
Calculate DFU, WSFU, peak flow, and recommended supply / drain pipe sizes for any combination of fixtures
DIYRuler estimate
Fixture Requirements
Generated
May 17, 2026
Fixture Requirements
Fixture Requirements
System Requirements
Add at least one fixture to begin.
We’ll size your supply and drain pipes based on combined demand.
- Peak flow rate (GPM) and supply pipe size
- Drainage fixture units (DFU) and drain pipe size
- Estimated fixture cost
Total project cost appears here when inputs are complete.