Materials Calculators
Pure-math calculators that answer one question: how much material do I need? Each tool uses standard industry formulas and supports a configurable waste factor.
Paint Calculator
How many gallons of paint you need.
Flooring Calculator
Square footage of flooring material to buy.
Tile Calculator
Number of tiles needed including grout joints.
Concrete Calculator
Cubic yards and bags of concrete required.
Gravel & Sand Calculator
Cubic yards and tons of fill material.
Mulch Calculator
Cubic yards and bags of mulch for any bed.
Drywall Calculator
Sheets of drywall for walls and ceilings.
Lumber Calculator
Board feet and number of boards needed.
Decking Calculator
Boards, joists, and fasteners for a new deck.
Roofing Calculator
Squares and bundles of shingles for any roof.
Insulation Calculator
Rolls, batts, or bags of insulation needed.
Fence Material Calculator
Posts, rails, and pickets for any fence.
Wallpaper Calculator
Rolls of wallpaper accounting for pattern repeat.
Brick & Block Calculator
Number of bricks or blocks plus mortar bags.
Stain & Sealer Calculator
Gallons of stain or sealer for any surface.
Sod Calculator
Pallets and rolls of sod for a new lawn.
Topsoil Calculator
Cubic yards and tons of topsoil for any bed.
About Materials Calculators
BuildWise materials calculators are built around the formulas working contractors actually use on the job. Each tool takes simple inputs — room dimensions, board sizes, depth, coverage rate — and returns a quantity in the unit you actually buy material in: gallons, sheets, board feet, cubic yards, bags, or counts.
Waste factors are configurable on every materials calculator because the right number depends on your project. A simple straight-grid tile job runs at 10% waste; a herringbone pattern needs 20%. A long, straight wall paint job runs at 10%; a textured ceiling with dozens of cut-ins might need 15%.
These calculators are free, instant, and require no signup. They’re built for homeowners doing their first project as well as contractors looking for a fast second-opinion on a takeoff.
Frequently asked questions
Yes. The formulas are the same standards used in construction takeoffs. Pros use them for fast quotes; homeowners use them to know what to buy.
Default to 10% for most materials. Increase to 15% for tile patterns, roofing, and rough surfaces, and to 20% for diagonal or herringbone tile and complex deck framing.
Yes — every calculator includes a methodology section showing the exact formula and any assumed coverage rates or material yields.