Concrete Calculator
Estimate concrete from project dimensions, keep waste visible, and compare cubic metres, cubic feet, cubic yards and bag quantities.
Formula and method
Each dimension is converted to metres before the volume is calculated, so mixed units such as feet for length and inches for thickness work correctly.
Final volume = base volume × quantity × (1 + waste %)Material-planning boundary
This tool estimates concrete quantity from dimensions you provide. It does not determine structural thickness, footing adequacy, column capacity, reinforcement or code compliance. Check supplier bag yield and delivery increments before ordering.