Pipe weight calculator.

Mass per metre of a circular pipe is the cross-sectional area of the wall multiplied by the material density:

m = π × (OD − t) × t × ρ ÷ 10⁶  [kg/m]

with OD and t in millimetres and ρ in kg/m³. For carbon steel this simplifies to the familiar (OD − t) × t × 0.02466. Water contents add π/4 × ID² × 1 000 ÷ 10⁶ kg/m, where ID = OD − 2t.

NPS outside diameters and wall thicknesses follow ASME B36.10M for carbon steel pipe. Weights exclude fittings, flanges, coatings and insulation.

Related reading: hydrostatic testing.

Estimates for planning and education only. Verify against the applicable code edition, manufacturer data and a competent engineer.