Concrete Calculator
Estimate how much concrete you need for slabs, footings, columns, and tube/circular pours.
About Concrete Estimation
This calculator estimates the volume of concrete required for common forms. Always add 5-10% extra for waste, spillage, and uneven subgrade. One 50kg bag of cement yields roughly 0.035 m³ of concrete; one 80lb bag of ready-mix yields 0.6 ft³ (~0.017 m³).
Pour Dimensions
Shape
Units
Waste Allowance (%)
Result
Volume (m³)
3.05
Volume (ft³)
107.7
Volume (yd³)
3.99
50kg Cement Bags (~)
87
With 10% waste: 3.05 m³ of concrete needed.