Free home improvement calculators

Free calculators for working out how much material you need for a job, from concrete and gravel to turf, decking and fencing. No sign-up, and nothing is sent anywhere.

Material calculators

Each one works out the quantity of material to order for your job, so you buy the right amount and avoid a second trip or a pile of leftovers. They give you the bags, tonnes, rolls, boards, packs or sheets you need, with a sensible waste allowance built in and every assumption stated on the page. They are quantity tools, not prices, so to estimate what a finished job costs use the Costwise cost calculator or the matching cost guide. Everything runs in your browser, with no sign-up and nothing sent anywhere.