Construction Calculators
Free tools for stairs, drywall, rebar, fencing, decks, gravel, paint, roofing, tiles and more. Instant results — no signup needed.
Stair Calculator
Calculate rise, run, stringer length and step count.
Drywall Calculator
Estimate sheets and cost for any room.
Rebar Calculator
Quantity, spacing and weight for concrete slabs.
Fence Calculator
Posts, panels and concrete bags for any fence line.
Deck Calculator
Boards, joists and material estimate for any deck.
Gravel Calculator
Cubic yards and tons for driveways and landscaping.
Paint Calculator
Gallons needed with cost estimate for any room.
Roof Pitch Calculator
Rise, run, angle and rafter length calculator.
Roofing Calculator
Shingles, squares and material cost estimator.
Topsoil Calculator
Cubic yards and bags of topsoil needed.
Tile Calculator
How many tiles and boxes for any floor or wall.
Wallpaper Calculator
Rolls needed for any room with pattern repeat.
Retaining Wall Calculator
Blocks, fill and base for retaining walls.