Concrete Tube Calculator
Calculate concrete tube with explicit inputs and a worked example.
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.
- Quantity estimate only. Check dimensions, waste and product coverage for the actual project.
Example Calculation
- Outer diameter: 1 m
- Inner diameter: 0.8 m
- Length: 2 m
A 2 m tube with diameters 1 m and 0.8 m contains about 0.56549 m³.
Frequently asked questions
How do I use this calculator?
Enter outer diameter, inner diameter, length. The result updates automatically. Use Reset to restore the example values.
What method does it use?
V = π(D² − d²)L/4. Quantity estimate only. Check dimensions, waste and product coverage for the actual project.
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.