About this app

ConcreteCalc is the fastest way to figure out how much concrete you need for any pour. Built for contractors, tradespeople, and serious DIYers who need accurate numbers on the job site — no internet required. CALCULATE ANY SHAPE Enter dimensions for slabs, footings, columns (sonotubes), walls, steps, or circular pads. Pick from common thicknesses or enter a custom value. Results update instantly. VOLUME, BAGS & TRUCK LOADS Get your total volume in cubic yards or cubic metres, the number of bags needed for each bag size, and how many ready-mix truck loads to order — all in one view. WASTE FACTOR BUILT IN Choose from standard waste percentages (5%, 7%, 10%, 15%) or enter a custom value. The app adds it automatically so you order the right amount the first time. PROJECT TOTALS Save multiple calculations to a single project. See combined volume, total truck loads, and a cost estimate for the entire job. Share a clean summary via text or email. COST ESTIMATES Set your local price per cubic yard (or cubic metre) and delivery fee. The app calculates estimated material cost so you can quote with confidence. IMPERIAL & METRIC Full support for both unit systems. Enter in feet/inches or metres/centimetres. The app defaults to your country's standard system, and you can switch anytime. CUSTOMISABLE SETTINGS Adjust truck capacity, bag sizes, and bag yields to match what is available in your area. Set per-bag and per-truck pricing for detailed cost breakdowns. BUILT-IN REFERENCE GUIDE Quick-access tables for bag yields, recommended slab thicknesses, concrete strength (PSI/MPa), sonotube sizes, waste factor guidelines, and ready-mix truck capacities. WORKS OFFLINE No account. No internet. No ads. Every feature works anywhere — on the job site, in a basement, or in the middle of nowhere. TRANSPARENT FORMULAS Every calculation uses standard geometry trusted across the construction industry. Visit our help page to see the exact formulas and worked examples.

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