Tools
Project calculators
Contractor-style estimates with metric/imperial toggles, rotating tips, and plain explanations of the math. Pick a project below.
Paint
Wall area, coats, openings, and paint volume in gallons or liters.
Open calculator →Flooring
Boxes of plank or laminate from room size, coverage, and waste %.
Open calculator →Tile
Tile boxes for floors and walls with adjustable waste for layouts.
Open calculator →Drywall
4×8 sheet counts from wall dimensions and cut waste.
Open calculator →Concrete
Slab volume in cubic yards and meters from area and thickness.
Open calculator →Mulch
2 cu ft bags from bed size and depth for landscape beds.
Open calculator →Wallpaper
Rolls from wall area, usable coverage per roll, and pattern waste.
Open calculator →Roofing
Shingle bundles, underlayment, and drip edge from roof area and pitch.
Open calculator →Deck & Fence
Deck board and fence post/picket estimates for outdoor projects.
Open calculator →Siding
Siding squares from perimeter, wall height, openings, and waste.
Open calculator →Insulation
Bag or batt-pack counts from target area coverage and waste.
Open calculator →Phase 3 is live
Every calculator now includes a cost and budget planner, plus links to the DIY Learn hub for installation guides and planning tips.