Material calculators for every DIY & contractor job
BuildCalc turns your measurements into tons, cubic yards, bags, and squares — with the formula and density data behind every number. Free, fast, and no sign-up. 68+ calculators covering asphalt, concrete, gravel, roofing, and more.
Site work & landscaping
Driveways, beds, and grading — order the right tons and yards.
Sand calculator
tons, yards & bags for any project
Paver Sand Sand Tons to Yards
Topsoil calculator
cubic yards & bags for lawns and beds
Topsoil in Yards Topsoil Coverage
Siding calculator
squares & panels for any wall area
Vinyl Siding Board and Batten
Asphalt calculator
tons, truckloads & cubic yards
Asphalt Tonnage Asphalt Millings Square Feet to Tons
Cubic Yard calculator
convert any length, width & depth to yd³
Cubic Yards of Concrete
Rebar calculator
bars, spacing & total length for a slab
Rebar for a Slab
Drywall calculator
sheets, mud & screws for any room
Drywall Mud Sheetrock
Retaining Wall calculator
blocks, base & courses for any wall
Retaining Wall Blocks
Exterior & structure
Roofs, walls, fences, and stairs, sized to code and to spec.
Roofing calculator
squares, bundles & pitch
Roof Pitch Roofing Squares Shingle
Insulation calculator
batts, rolls & R-value coverage
Gravel calculator
tons, yards & bags for driveways
Pea Gravel Gravel Tons Gravel Driveway
Stair calculator
rise, run & IRC code check
Fence calculator
posts, panels & pickets by length
Fence Pickets
Wallpaper calculator
rolls & strips for any room
Cubic Feet calculator
convert any dimensions to ft³
Interior & finishing
Concrete, tile, paint, and flooring for the finish work.
Mulch calculator
cubic yards & bags for any bed
Bags of Mulch per Yard Mulch in Cubic Yards
Decking calculator
boards, screws & joists
Tile calculator
tiles, boxes & waste for any room
Concrete calculator
yards, bags & slabs
Concrete Bags Concrete Slab Concrete Footing
Paint calculator
gallons & coats for any room
Paint for a Room Exterior Paint
Soil calculator
cubic yards & bags for beds
Raised Bed Soil Potting Soil
Flooring calculator
boxes, planks & waste
Laminate Flooring
Built on published data, honest about cost
Every density and conversion is cited to an industry authority. We show material quantities you can verify — and for install pricing, which swings widely by region, we point you to published cost guides and local contractor quotes instead of inventing a number. Read our data methodology.