Sheets, gallons, bags and rolls for everything inside the studs. Coverage figures here vary more with surface texture and finish level than people expect.
Drywall Calculator
Find how many sheets of drywall you need, plus joint compound, tape, and screw estimates.
Open calculator →Drywall Mud Calculator
Estimate joint compound and tape by the square foot or by the sheet, adjusted for your level of finish.
Open calculator →Insulation Calculator
Batts, blown-in bags or rigid board for a target R-value, by climate zone and cavity depth.
Open calculator →Attic Insulation Calculator
Attic insulation calculator. Enter your attic size and existing depth to get the extra inches, bags of blown-in or batts needed to hit your target R-value.
Open calculator →Paint Calculator
Find out how many gallons of paint you need. Supports different finishes, coats, and ceiling painting.
Open calculator →Ceiling Paint Calculator
Ceiling paint calculator. Calculate how many gallons of ceiling paint you need based on room dimensions. Includes coverage rates and cost estimates.
Open calculator →Bathroom Paint Calculator
Bathroom paint calculator. Calculate how many gallons of paint for your bathroom walls and ceiling. Recommends moisture-resistant finishes for wet areas.
Open calculator →Wallpaper Calculator
Calculate how many rolls of wallpaper you need. Accounts for pattern repeat and windows/doors.
Open calculator →Accent Wall Calculator
Calculate wallpaper for a single feature wall. Perfect for accent walls and statement walls.
Open calculator →Walls & Interior Guides
Longer reads that pair with these calculators — costs, comparisons and step-by-step walkthroughs.