Concrete Calculator
PopularCalculate the exact volume of concrete needed for slabs, footings, and columns in cubic metres, feet, or yards.
- Slabs
- Footings
- Volume
Free Construction Calculators
Precise tools for every construction project
ConstructMetric delivers free, engineer-grade calculators for common construction tasks. From concrete slabs to brick walls — get accurate measurements instantly, with the formulas shown so you can trust the numbers.
- 6+
- Calculators (growing)
- 100%
- Free, always
- 0
- Account needed
Calculators
Pick a calculator
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Brick Calculator
SoonEstimate the number of bricks and mortar bags needed for any wall or structure.
- Walls
- Mortar
- Count
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Flooring Calculator
SoonWork out how many tiles, planks, or square metres of flooring material you need.
- Tiles
- Planks
- Area
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Paint Calculator
SoonFind out how many litres of paint are required to cover your walls and ceilings.
- Walls
- Litres
- Coverage
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Roofing Calculator
SoonDetermine the number of shingles or sheets needed to cover any roof area.
- Shingles
- Sheets
- Area
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Gravel & Aggregate
SoonCalculate tonnes or cubic metres of gravel, sand, or aggregate for foundations and paths.
- Gravel
- Sand
- Tonnes
Why ConstructMetric
Built for accuracy and speed
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No fluff, just results
Every calculator is purpose-built. Enter dimensions, get results. No ads cluttering the tool, no account required.
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Formula transparency
Every calculator shows the exact formula used so you can verify the maths yourself — no black boxes.
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Works on any device
Mobile-first responsive design means the tools work perfectly on the job site, in the truck, or at the desk.