Home/Building Calculators

🏗️ Building & Construction Calculators

8 free calculators for Australian tradies, builders, and renovators.

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Concrete Calculator
Volume of concrete for slabs, footings, columns (cubic metres).
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Square Metre Calculator
Floor area for rooms, houses, and irregular shapes.
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Tile Calculator
Number of tiles needed for floors, walls, or splashbacks.
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Roofing Calculator
Roof area and materials for gable, hip, and flat roofs.
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Stair Calculator
Stair rise, run, number of steps, and stringer length.
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Gravel Calculator
Volume and weight of gravel, crushed rock, or aggregate needed.
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Mulch Calculator
Volume of mulch or compost needed for garden beds.
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BTU / Air Conditioner Size
Air conditioner size (kW) for Australian rooms and climate zones.