Concrete & masonry
Concrete Bags Calculator
Your measurements : volume, finished volume per bag. Your estimate : bags to buy, volume supplied.
How the calculation works
Concrete Bags Calculator
round up(Volume × (1 + Waste allowance / 100) ÷ Finished volume per bag)Before you order
- Use the coverage, yield and dimensions printed on your product. Waste allowance is adjustable; real cuts and site conditions may change the order.
- Planning estimate only. This is not a structural design, a safety approval or a local code check.
Worked example
- Volume
- 1 m³
- Finished volume per bag
- 0.012 m³
- Waste allowance
- 10 %
Bags to buy 92
Volume supplied 1.1 m³