Free material calculators for homeowners and contractors
Know exactly how much to order
Enter your measurements and get cubic yards, tons, bags, gallons, boxes and a cost estimate, with waste and the extras that are easy to forget. Plan a weekend project, or check the numbers before you bid a job.
Start with concrete or paintAll calculators
Concrete CalculatorHow many cubic yards of concrete, or how many 40, 60 and 80 lb bags, you need for a slab, patio, walkway, footing pad or round pier.Gravel CalculatorCubic yards and tons of gravel for a driveway, path, drainage trench or patio base.Mulch CalculatorHow many cubic yards, or 2 cubic foot bags, of mulch you need for flower beds, tree rings and borders.Topsoil CalculatorCubic yards, tons and bags of topsoil for a new lawn, raised bed or garden, with a bulk-versus-bag cost comparison.Paint CalculatorHow many gallons of paint and primer a room needs from its size, ceiling height, doors, windows and coats, rounded to what you actually buy.Tile CalculatorTiles, boxes, grout and thinset for a floor, shower or backsplash, with waste set by layout (straight, diagonal or herringbone).Flooring CalculatorSquare feet, boxes and underlayment for laminate, vinyl plank, engineered or solid hardwood, with waste based on the layout.Drywall CalculatorSheets of 4x8, 4x10 or 4x12 drywall for walls and ceilings, plus screws, tape and joint compound.Deck CalculatorDeck boards, joists, ledger, beams, posts, footings, hardware, railing and stairs for a rectangular attached or freestanding deck, with a joist-span check.Fence CalculatorPosts, rails, pickets or panels, concrete bags and gate hardware for a wood, vinyl or chain-link fence.Insulation CalculatorThe R-value to aim for in your climate zone, how much to add over what is already there, and the bags of blown-in, packs of batts or sheets of foam board to buy for an attic, wall, floor or basement wall.Paver CalculatorPavers, pallets, compacted base, bedding sand, edge restraint, polymeric sand and fabric for a paver patio, walkway or driveway.Retaining Wall CalculatorBlocks, caps, base gravel, leveling sand, drainage stone, perforated pipe, filter fabric and geogrid for a segmental block retaining wall.Roofing CalculatorRoof area in squares, shingle bundles, starter, ridge cap, underlayment, ice and water shield, drip edge, nails, flashing and a dumpster for the tear-off, from the house footprint, roof shape and pitch.
Plan a whole project
Build a PatioA poured or paver patio is mostly three layers: compacted gravel base, bedding or concrete, and the surface.Plan a Garden BedNew beds need soil on the bottom and mulch on top.Refresh a BathroomBathroom remodels are measured in small areas, but waste and extras add up.Refresh a RoomA standard room refresh is paint plus new flooring.
How it works
Measure
Length, width and depth or height. No sign-up.
Length, width and depth or height. No sign-up.
Adjust
Change waste, layout, coverage and, if you like, local prices.
Change waste, layout, coverage and, if you like, local prices.
Order the right amount
Quantities in the units stores and suppliers sell, from single bags to bulk yards and pallets.
Quantities in the units stores and suppliers sell, from single bags to bulk yards and pallets.
Why you can trust the numbers
Every formula is on the method page. Waste allowances follow common trade guidance and are always adjustable.