ConcreteCalc: Slab & Footing

How much concrete do I need for my slab? How many bags of cement, how much screed or gravel? ConcreteCalc estimates concrete volume and building materials in a few steps – right on your Android device, even without internet.

TEN CALCULATORS FOR YOUR PROJECT

• Concrete slab: concrete for floor slabs from length, width and thickness.
• Footing: rectangular strip and pad footings, one or many.
• Column / round footing: volume for circular foundations and columns.
• Concrete stairs: concrete for solid steps on the ground from number of steps, step height and depth.
• Concrete bags: number of bags from volume and yield per bag, rounded up.
• Concrete mix: cement, sand, gravel and water for site-mixed concrete at 1:1.5:3, 1:2:4 or 1:3:6 – including cement bags.
• Floor screed: dry mix and bags from area, thickness and the consumption printed on the bag.
• Gravel / crushed stone: volume and weight in tonnes for sand, gravel, crushed stone or chippings.
• Bricks / blocks: block quantity from wall and block size, optional joint width.
• Material costs: costs for ready-mix or bagged concrete with your own prices.

WEIGHT, MIXER TRUCKS AND RESERVE

Concrete results show the weight and the mixer truck loads you need. Choose 0, 5, 10 or 15 percent reserve; results show the base quantity and totals including reserve. Send a concrete result straight to the bags, mix or cost calculator.

EASY ON SITE

Millimetres, centimetres and metres as well as inches, feet and yards are supported. Enter volumes in cubic metres, litres or cubic yards; results are shown in metric units. Comma and point both work for decimals. Share your calculation through the Android share menu.

Choose English, German, Spanish, French, Italian or Portuguese, with light and dark mode. All calculators work offline. No account required.

CONCRETECALC PRO

The free version contains ads. Pro is a one-time in-app purchase, no subscription:
• no banner or full-screen ads
• Projects: save calculations, name them and reopen them later
• PDF export: share a single result or a whole project as a material list
Projects stay on your device only. Internet may be needed for ads, privacy dialogs and Google Play purchases.

ConcreteCalc provides estimates. Check results, material yield and requirements before ordering or building. Mixes are guide values for site-mixed concrete; for load-bearing parts follow your structural engineer's specification. No structural or reinforcement design; material costs exclude delivery and labour.