Estimate concrete for a rectangular slab in cubic meters, yards and feet, plus whole bags using your product’s stated yield.
Printed from Calxy · https://www.calxy.net/other/concrete-calculator
0.001 – 1000000000
0.001 – 1000000000
0.001 – 1000000000
0 – 100
0.000001 – 10
Concrete quantity including allowance
2.2000 m³
Rectangular slab volume only; excludes footings, reinforcement, structural design and site suitability. Use your actual bag yield and ordering allowance.
Convert length, width and thickness to meters.
Volume = length × width × depth × (1 + allowance/100).
Bag count = required volume ÷ product yield, rounded up.
Convert slab dimensions to meters, then multiply length × width × thickness × (1 + allowance/100). Divide by bag yield and round up.
A 5 m by 4 m slab, 10 cm thick, needs 2 m³ before allowance. With 10% extra it needs 2.2 m³, or 184 bags yielding 0.012 m³ each.
No. Thickness is an input supplied by you or your designer. The tool calculates quantity, not structural suitability, reinforcement or foundations.
Last updated . Results are estimates for informational purposes only.