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Measure right, waste less, build better.

Free calculators and worked examples to find the right quantity of paint, tile, concrete, mulch, food portions, water, detergent or insulation.

Calculators

  • Paint quantity calculator

    Estimate paint for walls, ceilings or both from room dimensions and the coverage printed on your tin.

  • Tile quantity calculator

    Estimate the area to order, tile count and box count using your own waste allowance and box coverage.

  • Concrete volume calculator

    Calculate slab, strip footing or round column volume and bags from the yield printed on your bag.

  • Mulch, soil and gravel calculator

    Work out the volume of a mulch, soil or gravel layer in cubic yards or cubic metres, and the bags needed from the volume printed on your bag.

  • Water volume calculator for tanks, ponds and pools

    Work out how much water a rectangular or round tank, pond or pool holds, in US gallons or liters, from its dimensions and water depth.

  • Detergent washes per pack calculator

    Find out how many washes a bottle or box of detergent gives, from the pack size and the dose per wash printed on its label, and how many weeks it lasts.

  • Insulation quantity calculator

    Work out the area to insulate, the area to order with your waste allowance, and the packs needed from the coverage printed on the pack.

  • Drywall sheet calculator

    Count the drywall sheets needed for the walls or ceiling of a room from its dimensions, the openings to deduct and the size of your sheets.

  • Wallpaper calculator: how many rolls do you need

    Count the wallpaper rolls needed for a room from the wall perimeter and height, using the roll size and pattern repeat printed on the label.

  • Sealant and caulk bead calculator

    Work out the volume of a bead of sealant or caulk from its length, width and depth, and the cartridges needed from the volume printed on yours.

  • Fertilizer and seed quantity calculator

    Work out how much fertilizer or seed a lawn or bed needs from its area and the application rate printed on the bag, and the bags to buy.

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