Know exactly how much to buy before you start.
Free, accurate calculators for paint, flooring, tile and more. Get the materials you need — and a real cost estimate — in seconds. No sign-up, no guesswork.
Start your project the right way
Pick a calculator below. Each one accounts for waste, coats, and real-world details — then estimates your cost.
Paint Calculator
How much paint for a room, including coats, doors, and windows.
Open calculator →Flooring Calculator
Square footage and boxes for laminate, vinyl, or hardwood — with waste.
Open calculator →Tile Calculator
How many tiles you need for any room and tile size, including waste.
Open calculator →Concrete Calculator
Cubic yards of concrete for slabs, footings, and posts.
Open calculator →Mulch & Soil Calculator
Cubic yards and bags of mulch, soil, or gravel for any bed.
Open calculator →Drywall Calculator
Sheets, screws, and joint compound for any room.
Open calculator →Wallpaper Calculator
How many rolls you need for a room, with pattern-repeat waste.
Open calculator →Deck Calculator
Deck boards and screws for any deck surface, with waste.
Open calculator →Baseboard Calculator
Linear feet and pieces of baseboard or trim for a room.
Open calculator →Gravel Calculator
Tons, cubic yards, and bags of gravel for driveways and paths.
Open calculator →Carpet Calculator
Square feet, square yards, and cost of carpet for any room.
Open calculator →Roofing Calculator
Roofing squares and bundles of shingles from your roof size.
Open calculator →Fence Calculator
Posts and panels for a fence of any length, with cost.
Open calculator →Grass Seed Calculator
Pounds of grass seed (or sod) for a new lawn or overseeding.
Open calculator →Stair Calculator
Number of steps, riser height, and total run from your rise.
Open calculator →BTU Calculator
BTUs and AC tonnage to heat or cool a room of any size.
Open calculator →Insulation Calculator
Bags or rolls of insulation for an attic, wall, or floor.
Open calculator →Paver Calculator
Pavers needed for a patio or walkway, plus the base to plan.
Open calculator →Estimates you can actually trust
Built for real projects
Our formulas account for waste, extra coats, doors, and windows — not just raw square footage — so you buy the right amount.
Cost estimates included
See what your materials will actually cost. Prices are editable, so you can match your local store or a quote you already have.
Fast and private
Results update instantly in your browser. No account, no email wall, no spam — just the numbers you came for.
Not sure where to start?
Plain-English guides for common projects — each one hands off to the right calculator.
How much paint do I need?
The formula, a worked example, and a quick reference by room size.
Read guide →How to measure for flooring
Step-by-step measuring, odd shapes, and converting to boxes.
Read guide →What does tiling a floor cost?
A realistic breakdown of materials, labor, and ways to save.
Read guide →