ConcreteCalc: Concrete Calc

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.