Concrete Slab Volume Formula
Converting from mm³ to m³
Related Resources
Concrete Slab Calculator Australia — Volume & Materials
Calculate concrete volume for slabs, driveways, paths, and shed floors. Enter length, width, and thickness to get cubic metres, plus material estimates.
Frequently Asked Questions
How thick should a concrete slab be in Australia?
Standard thicknesses: 100mm for paths and patios, 125-150mm for driveways, 100mm for shed floors, and 85-100mm for house slabs (waffle pod or raft). Always check with your engineer for structural requirements.
How many cubic metres of concrete for a 50m2 slab?
At 100mm thick: 50 x 0.1 = 5 cubic metres. At 150mm thick: 50 x 0.15 = 7.5 cubic metres. Always order 5-10% extra to account for uneven ground and waste.
How much does a cubic metre of concrete cost in Australia?
Pre-mixed concrete delivered costs approximately $250-350 per cubic metre in 2026, depending on mix strength and location. Pump hire adds $150-300. Small loads under 3m³ often attract a short-load fee of $50-100.
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