Concrete Sonotube Calculator
Estimate fill volume for a circular concrete tube using its measured internal diameter and fill height. No manufacturer dimensions or tolerances are assumed.
Reference calculation or estimate for example inputs; assumptions and limitations apply.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Internal diameter (m) | Enter internal diameter in m; use the same basis as the other measurements. |
| Height or depth (m) | Enter height or depth in m; use the same basis as the other measurements. |
| Extra volume allowance (%) | Enter percentage units: 5 means 5%, not a fraction of 0.05. |
Understanding your result
The answer estimates quantity, coverage or cost from the dimensions and allowances you entered. It does not size a structural member, assess capacity or determine installation adequacy.
Common mistakes
- Mixing centimetres with metres, or outside dimensions with the actual filled volume.
- Treating allowance, compaction, supplier yield and density as interchangeable adjustments.
Check your calculation
- Measure independently, subdivide irregular shapes, and compare supplier pack/yield information with the units used here.
Calculation checks, sources and review limits
What concrete volume fills a tube with my measured internal diameter and height?
Estimate fill volume for a circular concrete tube using its measured internal diameter and fill height. No manufacturer dimensions or tolerances are assumed.
Common uses
- What concrete volume fills a tube with my measured internal diameter and height
- Check cylinder volume and volume with allowance using the actual inputs shown.
How it works
Measure or obtain the actual internal tube diameter and intended fill height, then apply the cylinder formula. The calculator does not supply a branded product size, manufacturing tolerance or installation specification. Convert the diameter and height to the same unit before multiplying. The entered extra-volume allowance is a purchasing scenario, not a manufacturer recommendation or structural assessment.
Worked example
Enter Internal diameter: 2 m; Height or depth: 1 m; Extra volume allowance: 0 %. Results: Cylinder volume: 3.141592653589793 m³; Volume with allowance: 3.141592653589793 m³.