Concrete Calculator — Metandum

Plan your next concrete purchase with 23 calculators in a convenient Chrome side panel. Enter your measurements and product specifications, review the quantity breakdown, and keep calculations locally for later. Concrete volume: slabs, footings, columns, walls, sloped slabs, rings, thickened edges, tapered piers, ribbed slabs, specified steps and channels. Mix, delivery and cost: bag quantities, ready mix truck loads, bag yield comparisons, mixer batch planning, and bagged versus ready mix quotes. Forms and reinforcement: rebar quantities, formwork, concrete form contact area, mesh sheet overlap and form panel reuse. Base preparation: gravel and vapor barriers. Switch between metric and US measurements with real value conversion. See net volume and volume with your entered allowance separately. Continue from a concrete volume calculation to bags, delivery or cost comparison without applying the allowance twice. Enter your own product yields, truck capacities and prices. Find tools with search, keep favorites, revisit recent tools, save named calculations and compare a captured result with revised inputs. Copy a readable result or export and import a local backup. The interface and calculations work offline. No account, advertising, analytics or automatic data transfer to Metandum. The extension does not read the websites you visit. A website link is available as an optional action. These are quantity and planning tools. They do not select structural design, concrete strength or reinforcement. Check project specifications and supplier details before ordering. Quote comparison includes only the costs you enter; monetary outputs use USD. Use the compact side panel or open a wider workspace tab with inputs and results side by side. Explore more free building and renovation calculators at Metandum.com. The website also offers project planners, material shopping lists, purchase tracking, scenario comparisons, reusable material profiles, PDF and CSV exports, project backups, and measuring and buying guides. Browser projects and exports are free and need no account. The extension does not automatically sync calculations with the website.