Plumbing Calculator - Work Toolz

Multi-Function Plumbing Calculator

Drainage Slope Pipe Volume Pipe Sizing Flow Rate WSFU Calc DFU Calc

Drainage Slope Calculator

Calculation Type:

Pipe Length

Desired Slope

Common slopes: 2% (1/4 in/ft approx), 1% (1/8 in/ft approx). For Ratio, enter the 'X' value (e.g., 50 for 1:50).

Result will appear here...

Pipe Volume / Capacity Calculator

Internal Pipe Diameter

Pipe Length

Result will appear here...

Pipe Sizing Calculator (Supply)

Desired Flow Rate (Q)

Fluid Velocity (V)

Typical max velocities: 5-8 ft/s (1.5-2.4 m/s) for copper/plastic supply lines to limit noise/erosion. Lower for drainage.

Required internal diameter will appear here...

Flow Rate Calculator

Internal Pipe Diameter

Fluid Velocity (V)

Flow rate (Q) will appear here...

Water Supply Fixture Unit (WSFU) Calculator

Enter the quantity for each fixture type installed (based on UPC). Leave blank or 0 if not present.

Total WSFU: 0

Note: Total WSFU helps determine required supply pipe size using plumbing code tables (e.g., UPC, IPC). Conversion to GPM depends on total load & probability of simultaneous use.

Drainage Fixture Unit (DFU) Calculator

Enter the quantity for each fixture type installed (based on UPC/IPC). Leave blank or 0 if not present.

Total DFU: 0

Note: Total DFU helps determine required drain/vent pipe size using plumbing code tables (e.g., UPC, IPC).