About BuildCalcs

BuildCalcs is a free collection of construction and material calculators built to give homeowners, DIYers, and contractors fast, trustworthy estimates.

Every tool runs instantly in your browser, includes a practical waste allowance, and shows the underlying formula so you can check the result yourself. We cover the everyday questions that come up on a job site or a weekend project: how much concrete for a slab, how many tiles for a floor, how much mulch for a bed, how many bricks for a wall.

These calculators provide planning estimates only. Materials, densities, and local practices vary, so always confirm final quantities with your supplier or a licensed professional before ordering.

Have a calculator you would like us to add? Let us know.