🏗️ Calculators: Construction & DIY
Calculators for concrete, roofing, paint, drywall, lumber, tile, and other building materials. Built for US contractors and DIYers.
Concrete Calculator
Free concrete calculator that turns your slab, footing, or pad dimensions into cubic yards and the number of pre-mix bags you need. Enter length, width, and ...
Paint Calculator
Free paint calculator that turns wall area, number of coats, and coverage into the gallons of paint you need. Use it as a paint coverage calculator for inter...
Roofing Calculator
Free roofing calculator that converts your roof footprint and pitch into roofing squares, shingle bundles, and estimated cost. Works as a roof pitch calculat...