Pipe Volume Calculator
Calculate the contents of a straight pipe from its internal diameter and length.
A QUICK WALKTHROUGH
How to use this tool
- Enter values in the labelled units.
- Calculate and review the result and limitations.
Formula and units
V(L) = π × (d(mm) / 2)² × L(m) / 1000; kg = V × 1; L/m = V / L
Scope and limitations
Use the true internal bore, not nominal size. Water mass assumes 1 kg/L. Excludes fittings, valves, other system components and system losses; this is not a system volume, dosing, pressure-loss or installation recommendation.
Input and precision
Enter a positive finite internal diameter and length, each no greater than 1,000,000,000. Results use floating-point arithmetic and display up to four decimal places; rounding does not improve accuracy.
Source
Independent arithmetic implementation. ToolFoundry source interface reviewed on 6 October 2026.
GOOD TO KNOW
Common questions
Are my values uploaded?
Values stay in this browser; they are not uploaded or stored.