Construction & material calculators

Estimate any job — by the numbers

Concrete, block, gravel, framing, siding and more. Get the cubic yards, bags or board count in seconds, with a waste allowance built in.

Imperial unitsTrade-tested formulasBuilt-in waste allowanceFree — no sign-up
Why trades use it

Built for people who actually order the material

  • Formulas you can check — every page shows the math (block coverage, slope multipliers, material densities).
  • Built-in waste allowance so you order the right amount the first time.
  • Runs in the browser — fast on the job site, nothing to install, no account.
  • Clear breakdowns you can copy or text to a supplier.

Pick a calculator and get your number

No sign-up, no app — just answers.

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