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    Construction & Electrical

    Cubic metre and concrete volume calculator

    Calculate geometric volume for a slab, wall, excavation or circular column. Each dimension has its own m, cm or mm selector, so a slab thickness can stay in millimetres while its length is in metres. Separate a single item, repeated quantity and additional volume allowance; one cubic metre is 1,000 litres.

    MAKE IT SIMPLE

    One cubic metre (m³), commonly called rube in Korean construction, is the volume of a 1 m × 1 m × 1 m cube.

    Geometric volume only. The allowance is your estimate; shrinkage, bulking, moisture, compaction, reinforcement, openings and vehicle/batch quantities are not inferred. No material density or price is assumed.

    Result

    Worked examples

    5 m × 4 m × 150 mm; 1 item; allowance 5%

    Geometric 3 m³; extra 0.15 m³; total 3.15 m³

    Convert 150 mm to 0.15 m before multiplying 5×4×0.15, then add the chosen 5%.

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