About Us

The Concrete Calculator is a free estimating tool built for DIYers, contractors and trade pros who need accurate concrete quantities fast. No sign-ups, no spreadsheets just enter your dimensions and get cubic yards, bags and cost in seconds.

Our mission

Over-ordering concrete wastes money; under-ordering ruins a pour. We started The Concrete Calculator to take the guesswork out of the job with clear, reliable math and plain-English guides on yardage, bag counts, cost and mix ratios.

What we cover

From slabs, footings and columns to driveways, sonotubes and fence posts, our calculators and guides span the full range of residential and light-commercial concrete work, in 18 languages, so the numbers are clear wherever you build.

Have a correction or a feature request? We'd love to hear it, reach us on the contact page.