Concrete Quantity Calculator
Estimate concrete volume and nominal cement, sand and aggregate quantities for a rectangular slab, footing or block from dimensions and a chosen volumetric mix ratio.
Net concrete volume
3.000 m³
Concrete incl. waste
3.150 m³
Cement
1270 kg
50 kg cement bags
25.4 bags
Sand
1.323 m³
Coarse aggregate
2.646 m³
Method and limitations
Volume = length × width × depth. For nominal volumetric mixes, this estimator uses a 1.54 dry-volume factor and a cement bulk density of 1440 kg/m³. These are estimating conventions, not structural mix-design rules. For design concrete, use the approved mix design, actual material densities, moisture corrections and project specifications.