ConcreteCalc: Concrete Calc

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About this app

How much concrete for your slab, foundations or screed? ConcreteCalc works out the exact volume, the number of bags and the mix ratios (cement, sand, gravel, water) — with the right professional ratios, so you pour just enough and waste nothing.

Enter your dimensions or the volume directly, choose the work type (slab, foundations, mortar, screed): ConcreteCalc gives you the volume in cubic metres, the number of ready-mix bags and the full mix breakdown, with a budget estimate and the tipping point towards ready-mix delivery.

WHAT CONCRETECALC CALCULATES
• The concrete volume in cubic metres for your job
• The number of ready-mix bags needed
• The full mix: cement, sand, gravel, water
• A budget estimate and the bag / ready-mix threshold

BUILT FOR REAL JOBS
• Work types: slab, foundations, mortar, screed
• Enter dimensions OR the volume directly
• Validated mix ratios (B20 to B35, mortars, screed)
• Safety guidance shown on screen

SIMPLE, NO STRINGS
• 100% free
• Works offline, no connection required
• No account, no personal data collected
• Keep a history of your calculations, stored locally on your phone

Also available on the web at construcalc.app.

ConcreteCalc is part of the BTP Series, with PaintCalc (paint) and TileCalc (tiles): all your job-site take-offs in one place.

What’s new

First release of ConcreteCalc
Work out the volume, number of bags and mix for your slab, foundations or screed. Professional ratios, safety guidance, budget estimate. 100% free, offline, no account.