Know what your project needs before you buy.
Fast, practical calculators for measurements, materials and project quantities—made for US homeowners and DIYers.
Estimate concrete without hiding the assumptions.
Change the measurements and waste allowance. The complete page explains the formula, bag conversion, measurement process and buying considerations.
One home. Seven calculation families.
Start with dimensions, then move into the material-specific quantity, packaging or layout tool your project needs.
Area & volume
Convert room, wall and project measurements into square feet, cubic feet and cubic yards.
Concrete & masonry
Estimate ready-mix volume, bags, footings, post holes, blocks, brick, mortar, rebar and pavers.
Landscaping
Calculate gravel, mulch, topsoil, sod, seed, landscape rock, fill dirt and retaining-wall materials.
Flooring & tile
Plan flooring, tile, grout, laminate, vinyl plank and carpet purchases with cut waste included.
Roofing & exterior
Calculate roof area, squares, shingles, pitch, metal panels, siding and gutters for planning.
Decks & fences
Estimate deck surface boards, fence panels, pickets and posts from a practical layout.
Paint, drywall & insulation
Estimate paint gallons, drywall sheets and insulation coverage for walls, ceilings and rooms.
Popular calculators
Cubic Yards
Calculate cubic yards from project length, width, and depth in inches, including optional waste for soil, gravel, mulch, or concrete.
Open calculator gravel calculatorGravel Calculator
Calculate gravel cubic yards and tons from area, depth, waste and material density. Get an order quantity for paths, beds and drainage.
Open calculator mulch calculatorMulch Calculator
Calculate bulk mulch cubic yards plus 2- and 3-cubic-foot bag counts from bed dimensions, depth and waste for accurate landscape ordering.
Open calculator square footage calculatorSquare Footage
Calculate square footage for one or multiple equal spaces, then add a custom waste allowance for accurate flooring, paint, or material planning.
Open calculator flooring calculatorFlooring
Calculate floor area, waste-adjusted coverage, and boxes to buy from room dimensions and the coverage printed on each flooring carton.
Open calculator roofing calculatorRoofing
Estimate sloped roof area and roofing squares from building dimensions, equal overhangs, pitch rise, and a material allowance.
Open calculatorUseful answers, with the assumptions left visible.
Every tool states its formula, units, conversion factors, purchase rounding and material assumptions. Each page includes a direct answer, worked example, measurement guide and sources when a primary reference applies.
Read the complete methodologyUse project measurements. No account or upload is required.
See depth, density, coverage, waste and rounding choices.
Copy a clear quantity, then verify it with the product or supplier.