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Concrete Calculator

Calculate volume in cubic metres and the number of 25kg bags needed for slabs, foundations, or posts.

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Gravel Calculator

Estimate the tonnes and volume of gravel, crushed stone, or chippings required for driveways and paths.

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Work out exactly how much sand and cement you'll need to mix mortar for your brick or blockwork wall.

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Find out the total number of bricks required for a wall based on its dimensions and your brick size.

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Calculate how much soil, compost, or bark you need for raised beds, garden borders, and new lawns.

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Work out exactly how many paving slabs you need for your patio or garden path, factoring in joint gaps and cuts.

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Determine how many litres of paint you need to decorate a room, automatically subtracting generic window and door sizes.

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Use our Tile Calculator to work out exactly how many wall or floor tiles you need for your bathroom or kitchen.

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Calculate how many rolls of loft insulation you need for base layers and top-ups to meet the 270mm recommended depth.

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Use our Decking Calculator to find out how many decking boards and linear metres you need for your garden project.

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Calculate the exact heat output in BTUs and Watts required to efficiently heat your room.

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Find out the minimum thickness of electrical cable needed to safely cover long distances without dangerous voltage drop.