Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Uniform ideal pipe. Dimensional tolerances, seams, coating and fittings excluded.
Example Calculation
- Outside diameter: 100 mm
- Wall thickness: 5 mm
- Length: 6 m
- Density: 7850 kg/m³
Outside diameter = 100 mm; Wall thickness = 5 mm; Length = 6 m; Density = 7850 kg/m³. Primary result: 70.2852816424.
Frequently asked questions
How do I use this calculator?
Enter outside diameter, wall thickness, length, density. The result updates automatically. Use Reset to restore the example values.
What method does it use?
area=π/4(D²−(D−2t)²); mass=area ×10⁻⁶ ×length ×density.. Uniform ideal pipe. Dimensional tolerances, seams, coating and fittings excluded.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.