Interior & Finish Calculators
Interior finishes define how a space looks, feels, and performs. From the first coat of drywall compound to the final trim installation, accurate material estimates help you budget confidently and avoid mid-project supply runs.
Paint Calculator
Gallons and cost for any room size, finish type, and number of coats.
Drywall Calculator
Sheets, screws, and joint compound for walls and ceilings.
Flooring Calculator
Sq ft and cost for hardwood, LVP, laminate, tile, and carpet.
Tile Calculator
Tiles and boxes for floor, wall, and backsplash installations.
Grout Calculator
Pounds of grout for any tile size and joint width combination.
Wallpaper Calculator
Rolls of wallpaper needed for any room with door and window deductions.
Carpet Calculator
Square yards and installed cost for carpet and pad.
Insulation Calculator
Batts, blown-in bags, or spray foam by R-value and climate zone.
Baseboard Calculator
Linear feet of baseboard, door casing, and window trim.
About Interior Finish Calculators
Interior finishes typically account for 30–40% of a new home's total construction cost and an even higher percentage of a remodel budget. Paint, flooring, tile, and drywall are the highest-volume finish materials — each with their own coverage rates, waste factors, and pricing structures. Accurate estimates prevent the common problem of ordering too little and dealing with dye-lot mismatches on a return trip to the store.
Flooring calculations must account for the room's layout relative to the plank or tile orientation, since diagonal layouts add 15–20% waste versus straight-lay patterns. Tile grout coverage depends heavily on joint width — narrow 1/16-inch joints require far less grout than wide 3/8-inch joints for the same square footage. Our calculators account for these variables so your estimate reflects real-world conditions.
Paint coverage varies by surface texture and porosity. A smooth, primed surface achieves 400 sq ft per gallon; rough masonry or heavily textured drywall can drop to 200–250 sq ft per gallon. Always apply a primer coat on new drywall or drastic color changes — it pays back in fewer finish coats and better color accuracy.