Concrete Calculator
Calculate volume of concrete needed and the number of premix bags required for slabs, footings and columns.
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Bags of premix needed
Reference
| Bag size | Yield per bag | Bags per m³ |
|---|---|---|
| 20 kg premix | ≈ 9 L (0.009 m³) | ≈ 110 |
| 25 kg premix | ≈ 11 L (0.011 m³) | ≈ 90 |
| 40 kg premix | ≈ 18 L (0.018 m³) | ≈ 56 |
| 60 lb (27 kg) US | 0.45 ft³ (0.0127 m³) | ≈ 78 |
| 80 lb (36 kg) US | 0.60 ft³ (0.0170 m³) | ≈ 59 |
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