How many yards, bags or gallons do you need?

Free calculators for concrete, mulch, gravel, paint, flooring and 20+ more building and landscaping materials. Enter your measurements — get exactly what to buy, with waste included.

Concrete & Masonry

All concrete & masonry →
Gravel CalculatorTons and cubic yards for driveways, paths and paver bases.Cubic Yard CalculatorVolume of a box or cylinder in cubic yards, feet and meters.Asphalt CalculatorTons of hot-mix asphalt for driveways and parking areas.Paver CalculatorPaver count plus base gravel, bedding sand and edging.Concrete Block CalculatorNumber of CMU blocks for a wall, with openings and pallets.Sand CalculatorCubic yards, tons and bags for paver beds, sandboxes and fill.Brick CalculatorNumber of bricks for a wall or veneer from brick type and joint.Post Hole Concrete CalculatorBags of concrete for fence, deck and mailbox posts.Concrete CalculatorCubic yards and bags for slabs, footings, walls, columns and steps.

Landscaping

All landscaping →
Mulch CalculatorCubic yards and bags for garden beds and tree rings.Topsoil CalculatorCubic yards, tons and bags for lawns and raised beds.Fence CalculatorPosts, rails, pickets or panels, and concrete for a wood fence.Sod CalculatorSquare feet, rolls and pallets of sod for a new lawn.Raised Bed Soil CalculatorSoil volume, bags and mix for raised garden beds.Grass Seed CalculatorPounds of seed for new lawns and overseeding, by grass type.Retaining Wall CalculatorBlocks, cap blocks and gravel for a retaining wall.

Walls, Floors & Roofs

All walls, floors & roofs →
Square Footage CalculatorArea of rooms, lots and irregular shapes in sq ft, sq yd and sq m.Paint CalculatorGallons of paint for walls, ceilings and trim, minus openings.Roofing CalculatorRoof area, squares, shingle bundles and accessories from pitch.Drywall CalculatorSheets, screws, tape and joint compound for a room.Tile CalculatorTiles, boxes, grout and thinset for floors, walls and backsplashes.Deck CalculatorDecking boards, joists, screws and footings for a deck.Wallpaper CalculatorRolls of wallpaper for a room, allowing for pattern waste.Siding CalculatorSquares and pieces of vinyl, fiber cement or wood siding.Flooring CalculatorSquare feet, boxes and cost with a waste allowance.Insulation CalculatorBatts and packages of insulation for walls, attics and floors.Carpet CalculatorCarpet and padding in square yards, using the roll width.Baseboard & Trim CalculatorLinear feet and pieces of baseboard, crown or trim.

How to estimate building and landscaping materials

Every material estimate starts with the same step: turn your project into area or volume. Area (square feet) drives paint, flooring, drywall, roofing, tile and sod. Volume (cubic feet or cubic yards) drives concrete, gravel, sand, mulch and soil. Multiply length × width for area, then multiply by depth for volume.

Next, add a waste allowance. Cuts, spills, uneven ground and breakage mean you almost never use exactly the theoretical amount — 5–10% extra is typical, and 10–15% for diagonal tile or complex roofs. Our calculators include a waste field so you can set it for your project.

Finally, convert to the unit your supplier sells: bags, yards, tons, gallons, boxes or bundles. That conversion is where most DIY mistakes happen, and it is exactly what these calculators automate.