This column concrete calculator finds the concrete fill volume for round or square columns. Enter the column size and height above to get the volume needed.
Formulas
Square column: V = side² × height Round column: V = (π ÷ 4) × D² × height
Example
0.3 m × 0.3 m square, 3 m tall: V = 0.3² × 3 = 0.27 m³. A round 0.3 m column of the same height needs 0.21 m³.
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Frequently Asked Questions
How do I calculate concrete for a column?
For a square column multiply side squared by height; for a round column use pi over 4 times diameter squared times height.
How much concrete for a 300 mm square column 3 m tall?
About 0.27 cubic meters, before adding a waste allowance.
Should I add waste for columns?
Yes, add 5 to 10 percent for spillage and form irregularities, and round up when ordering.