Construction calculator

Plan quantities before you request a quote.

Build a clearer material BOQ for foundations, masonry, concrete slabs, plaster and screed floors.

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Construction Cost Calculator

Enter measurements in metres or millimetres as shown. Every result identifies whether the quantity is measured in metres, square metres, bags, boxes, packs or individual units.

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Foundation quantities

Measure the continuous foundation trench. Reinforcement is calculated in linear metres, bars, stirrups and binding wire.

BOQ assumptions: 1.54 dry-volume factor, 6 cement bags per wet m³ for hand mix, 6 m bars, 1% binding-wire allowance by steel mass and preformed R8 500 × 170 mm stirrups. Engineer-designed reinforcement always takes priority.
Planning estimate only

m = linear metres, m² = square metres and m³ = cubic metres (a “cube”). Final quantities and prices depend on measurements, product selections, access, existing conditions and the confirmed scope of work. Water calculations are excluded.

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