Steel Pipe Weight Calculator
Calculate theoretical pipe mass per metre and total weight from outside diameter, wall thickness, length, quantity and material density. The annular-section method is transparent enough to check against a section table.
Pipe dimensions
Pipe weight result
How steel pipe weight is calculated
A circular pipe is a hollow cylinder. Its steel area equals the area of the outside circle minus the area of the inside circle.
Steel area = π/4 × (OD² − ID²)
Mass / metre = steel area × density
Diameter values must be in metres when combined with density in kilograms per cubic metre.
Worked example
For a 114.3 mm outside diameter and 6.02 mm wall thickness, the inside diameter is approximately 102.26 mm. Using 7,850 kg/m³ gives a theoretical unit mass close to 16.0 kg/m.
Why nominal dimensions are only a starting point
Pipe standards define dimensional tolerances, grades and manufacturing requirements. A calculated nominal mass may therefore differ from the actual supplied mass. Use the applicable section table or supplier documentation when the exact commercial weight matters.
Important boundary
This is a geometric mass calculation. It does not select a pipe schedule, pressure rating, structural grade or design thickness.
Quick dimensional sanity checks
| Condition | Expected effect |
|---|---|
| Increase outside diameter | Higher cross-sectional steel area and weight. |
| Increase wall thickness | Higher mass per metre. |
| Increase length | Proportional increase in total mass. |
| Change density | Direct proportional change in mass. |
Frequently Asked Questions
What is the pipe weight formula?
Use the annular area between the outside and inside diameters multiplied by material density.
Can I use this for stainless steel?
Yes, by entering a suitable stainless-steel density.
Does pipe length affect kg/m?
No. Length affects total mass but not theoretical mass per metre.
Can I use pipe schedule names instead of dimensions?
Not in this version. Enter the actual outside diameter and wall thickness from the applicable specification.