Know how much to order before you break ground.
Free calculators for bricks, cement, concrete, flooring and gravel. Enter your measurements and get quantities with waste already included.
Choose a calculator How we calculateQuick slab estimatemetres
2.10m³ of concrete
13cement bags (50 kg)
Based on a 1:2:4 mix with 5% waste. For other mixes, use the Concrete Mix Calculator.
Pick the material you’re ordering
Each calculator lists what you need to measure first, so you can finish in under a minute.
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Brick Calculator
Number of bricks and mortar for a wall, including openings. You needWall length, height, brick size -
Cement Quantity Calculator
Bags of cement and sand for plaster, masonry or screed. You needArea or volume, mix ratio -
Concrete Mix Calculator
Cement, sand and aggregate for slabs, footings and columns. You needDimensions, grade (M15, M20, 1:2:4) -
Flooring Calculator
Tiles, planks or boards for any room, with cutting waste. You needRoom size, tile or plank size -
Gravel Calculator
Volume and tonnes of gravel for drives, paths and drainage. You needArea, depth, gravel type
Waste is built in
Every result adds a realistic allowance for breakage, cuts and spillage, so you don’t come up short.
Metric and imperial
Work in metres, feet, inches or centimetres. Results are shown in the units you choose.
Estimates, not specifications
Confirm final quantities with your engineer or supplier before ordering large amounts.