Pipe Volume Calculator

Inputs

Pipe inside diameter (D)

Actual inside diameter, not nominal pipe size.

Pipe length per run (L)

Length of one identical pipe run.

Identical runs (N)

Number of identical pipe runs included in the total capacity.

runs

Fill fraction (F)

Bulk fill percentage of the contained volume. Use 100% for a full closed line.

Fill / drain flow (Q)

Flow used to estimate fill or drain time. Set to zero if time is not needed.

L/min

Fluid density (rho)

Fluid density used to convert contained volume into mass. Water is about 998 kg/m^3 near room temperature.

kg/m³

Default result

Contained liquid(V_f)

14.73L

Pass

100% of total capacity.

Also computed

Total pipe capacity(V_total)14.73L

1 identical run.

Capacity per run(V_run)14.73L

Fluid mass(m)14.7kg

Density 998.0 kg/m^3.

Fill / drain time(t)0.2945min

At 50.00 L/min.

Pipe flow area(A)490.9mm²

Method notes 3 notes

Pipe capacity uses V = (pi*D^2/4)*L. Use actual inside diameter, not nominal pipe size.
Fill fraction is a simple bulk fraction of contained line volume. It is not open-channel partial-depth geometry.
Final field work still needs trapped air, pitch, low points, fittings, valves, equipment volume, flushing allowance, fluid expansion and measured installed lengths.