Spike's Calculators

Calculate the amount of concrete needed for pouring columns using metric measurements.

To calculate the volume of a column (cylinder), you need to know the diameter and the height of the column.

- number of columns needed
- column's diameter in millimetres
- the height of the column in metres

- lineal metres of column forms needed
- the amount of concrete needed in cubic metres
- concrete needed in cubic yards
- concrete needed in feet

V = Π * D² ÷ 4 * h where V = concrete volume in cubic feet pi = 3.14159...... d = diameter h = height

column height = 6 metres diameter = 300mm = 0.3 metres needed = 5 columns 3.14159 * 0.3² ÷ 4 * 6 * 5 = 2.12 cubic metres of concrete

Using the formula from above;

3.14159 * 0.3² ÷ 4 * 6 * 5 =

3.14159 * 0.09 ÷ 4 * 6 * 5 = 2.12 rounded to two decimals

You need 2.12 cubic metres of concrete for these five columns.

To convert cubic metres to cubic yards multiply cubic metres * 1.30795061931439 To convert cubic metres to cubic feet multiply cubic metres * 35.3146667214886

- Circle
- Circle - Metric
- Donut
- Donut - Metric
- Ellipse
- Ellipse - Metric
- Equilateral Triangle
- Equilateral Triangle - Metric
- Octagon
- Octagon - Metric
- Oval
- Pentagon
- Pentagon - Metric
- Scalene Triangle
- Scalene Triangle - Metric
- Stadium Shape
- Stadium Shape - Metric
- Trapazoid
- Trapezium
- Plastic Concrete Footing Form