Construction calculators — designed for the lumber yard
Stop second-guessing the order. Get the number, then go.
Pour Tech is a free, mobile-first batch of construction calculators. Type the dimensions, read the result, and order the right amount of concrete, drywall, or paint the first time. No accounts. No ads in your calculator.
The calculators we ship
~30 seconds
How much concrete for a slab, post hole, footing, or column — in cubic yards and 60 lb / 80 lb bags.~30 seconds
Sheets, joint compound, tape, screws, and corner bead for any room in 4×8 or 4×12 sheets.~30 seconds
Gallons of paint and primer by surface type, coat count, and window/door deductions.
How Pour Tech stays free
Pour Tech is supported by non-intrusive display ads shown above and around the calculators. The calculators themselves are ad-free. We never charge for the math, never ask for an account, and never sell your inputs. See our Privacy Policy for the full breakdown, or our Affiliate Disclosure to learn how some product links may earn a commission.