Tube Volume Calculator
Calculate the volume of a hollow cylinder (pipe or tube)
Volume
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Tube Volume Calculator Formula
Volume of a hollow cylinder (tube):
V = π × (R² − r²) × h
R = outer radius, r = inner radius, h = length
How to Use This Calculator
- Enter the outer radius (R) — from the center to the outside wall.
- Enter the inner radius (r) — from the center to the inside wall. Must be less than R.
- Enter the length (h) of the tube.
- Click Calculate Volume to see the result.
Frequently Asked Questions
What does this calculator measure?
It calculates the volume of the material making up the tube wall — not the hollow interior. To find the interior volume, use our cylinder volume calculator with the inner radius r and length h.
What if I know the wall thickness instead of the inner radius?
The inner radius r = outer radius R minus wall thickness t. Subtract the wall thickness from the outer radius to get r before entering it here.
What units does this calculator use?
This calculator is unit-agnostic. If R, r, and h are all in millimeters, the result is in cubic millimeters (mm³). Use the same unit for all inputs.
How do I calculate the weight of a tube?
Multiply the tube's material volume (from this calculator) by the material's density. For example, steel has a density of about 7,850 kg/m³, so a steel tube with a volume of 0.001 m³ weighs approximately 7.85 kg.
What is the difference between a tube and a pipe?
In everyday language they are interchangeable, but in engineering, pipes are specified by nominal bore (inside diameter) while tubes are specified by outside diameter. This calculator works for both since it uses outer radius, inner radius, and length.
Can I share my calculation?
Yes. After clicking Calculate, the URL updates with your input values. Copy and share the URL to let anyone else see the same pre-filled form and result.