Concrete Column Volume Calculator
Work out the concrete volume needed for round or square columns from diameter, width and height, free and instant in your browser.
Enter Values
Minimum 1
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter the column diameter (mm) and height (m).
- Optionally set the number of columns for the total.
How it works
Volume = π × radius² × height, where the radius is half the diameter (converted from mm).
Worked example
300 mm × 3 m. ≈ 0.212 m³ per column.
Common mistakes
- Forgetting to order extra for spillage and over-dig.
- Using the diameter as the radius.
Frequently asked questions
How do I calculate concrete for a column?
For a round column, volume = π × radius² × height; for a square column, width × depth × height. The tool covers both.
Should I add extra for columns?
Yes — a small allowance covers form movement and spillage, and ordering a little over avoids a cold joint from a short pour.
Does this include the footing?
No — it's just the round column shaft. Add the footing/pad volume separately.
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Cite this tool
Zerdly. (2026). Concrete Column Volume Calculator. Retrieved from https://www.zerdly.com/tools/concrete-column-volume-calculator/
Tip: Enter any known values to calculate the remaining results.
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