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Pipe Weight Calculator

Work out pipe weight per metre and total weight in seconds. Pick an NPS size and schedule — or enter OD and wall thickness directly — choose the material, and the result updates live. Covers NPS ⅛″ to 48″, all schedules (5S–XXS) and 25+ grades — or use Manual mode for any OD and wall.

NPS + Schedule
Manual OD & wall
Weight per metre
16.07 kg/m
Total for 6 m: 96.4 kg
Per foot: 4.90 kg/ft · lb/ft: 10.80
OD 114.3 mm × 6.02 mm wall

Formula: weight (kg/m) = (OD − wall) × wall × π × density ÷ 1,000,000. Results are indicative; confirm exact mill weights on your MTC.

/ How it works

How to calculate pipe weight

The weight of a pipe depends on three things: its outside diameter (OD), its wall thickness, and the density of the material. The standard formula for weight per metre is:

W (kg/m) = (OD − wall) × wall × 0.02466  — for carbon steel (density 7850 kg/m³), with OD and wall in millimetres.

For other materials, multiply by the density ratio — for example ×1.019 for 316 stainless (8000 ÷ 7850) or ×0.574 for titanium. Then multiply the weight per metre by the pipe length to get the total. The calculator above does all of this automatically, including common NPS sizes and schedules.

/ FAQ

Pipe weight — common questions

How do you calculate the weight of a pipe?
Weight per metre (kg/m) = (OD − wall thickness) × wall thickness × 0.02466 for carbon steel, with OD and wall in millimetres. For other materials, multiply by the ratio of that material's density to carbon steel (7850 kg/m³). Multiply by the length in metres for total weight.
What is the weight of a 4 inch schedule 40 carbon steel pipe?
A 4 inch (NPS 4, OD 114.3 mm) Schedule 40 carbon steel pipe has a 6.02 mm wall and weighs about 16.07 kg per metre — roughly 96.4 kg for a standard 6 m length.
Does material affect pipe weight?
Yes — weight is proportional to density. Carbon steel is 7850 kg/m³; 304/316 stainless ≈ 8000, duplex ≈ 7800, copper ≈ 8960, aluminium ≈ 2700. The same dimensions weigh different amounts in different materials.
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