Concrete Volume Calculator
Work out concrete volume in cubic metres and ballast requirements.
Concrete needed for a 2.4m by 1m slab at 0.08m deep
For a concrete area measuring 2.4 metres by 1 metres at a depth of 0.08 metres, you will need approximately 0.20 m³ including the default wastage allowance shown below.
- Concrete volume0.18 m³
- Including wastage0.20 m³
- Approx ballast needed0.35 tonnes
Results - Concrete Volume Calculator
- Concrete volume0.18 m³
- Including wastage0.20 m³
- Approx ballast needed0.35 tonnes
Concrete calculation guide
Multiply length by width by depth to get volume in cubic metres, then add a sensible allowance for spillage and uneven ground.
Popular sizes
These concrete presets cover popular slab and base sizes for sheds, pads, outbuildings and general groundwork jobs.
Concrete searchers often want an answer for a shed base, slab or footing right away. Linking common slab presets such as 1.5m × 1m × 75mm, 1.5m × 1m × 100mm, 1.5m × 1.2m × 75mm, 1.5m × 1m × 125mm gives you indexable pages and still sends users into the full calculator if their job differs slightly.