Construction Calculators
Concrete, lumber, framing, drywall, roofing and site work quantities, with the formulas shown so you can check the math.
Concrete & Masonry
- Concrete CalculatorCalculate cubic yards of concrete for slabs, footings, round columns and stairs, with 80 lb and 60 lb bag counts,…
- Bags of Concrete CalculatorCalculate how many bags of concrete mix (40, 50, 60, 80 or 90 lb) you need for fence and deck post holes, small slabs…
- Rebar CalculatorCalculate rebar for a concrete slab grid: number of bars each way, total linear feet, weight by bar size, stock bars…
- Block Wall CalculatorCalculate how many concrete blocks (CMU) you need for a wall, including 8x8x16 blocks per square foot, courses, mortar…
- Brick CalculatorCalculate how many bricks you need for a wall or veneer: modular, standard, queen, king and utility brick per square…
- Mortar CalculatorEstimate mortar for bricks and blocks: 80 lb premixed bags, mortar volume, and portland cement, hydrated lime and sand…
- Gravel CalculatorCalculate how much gravel you need in cubic yards and tons for a driveway, path or patio base. Enter the area and…
- Sand CalculatorCalculate how much sand you need in cubic yards, tons and bags for paver bases, sandboxes and fill. Enter the area and…
- Crushed Stone CalculatorCalculate crushed stone for driveways, drainage and bases in cubic yards and tons. Pick a stone size, enter the area…
- Asphalt CalculatorCalculate hot mix asphalt tonnage for driveways and parking lots from area and compacted thickness, using 145 lb per…
- Topsoil CalculatorCalculate how much topsoil you need in cubic yards, tons and bags for lawns, raised beds and gardens. Enter the area…
- Mulch CalculatorCalculate how much mulch you need in cubic yards and bags (2 or 3 cubic feet) for garden beds. Enter the bed size and…
Framing & Lumber
- Board Foot CalculatorCalculate board feet for lumber from thickness, width and length. Build a cut list, add a waste allowance, and estimate…
- Stud CalculatorCalculate how many wall studs and plates you need for a framed wall at 12, 16 or 24 inches on center, with corners,…
- Rafter Length CalculatorCalculate common rafter length for a gable roof from span, pitch, overhang and ridge board, with ridge height, plumb…
- Roof Pitch CalculatorConvert roof pitch between rise/run (x/12), degrees and percent, with slope and hip/valley factors and roof area from…
- Stair Stringer CalculatorCalculate stair risers, riser height, treads, total run, stringer length and angle from total rise, with IRC riser and…
- Deck Board and Joist CalculatorCalculate deck boards, joists and screws for a deck from its size, board width, gap and joist spacing, with lengths to…
- Fence CalculatorCalculate fence posts, rails, pickets and concrete bags for a wood privacy or picket fence from its length, post…
- Plywood and Sheathing CalculatorCalculate sheets of plywood or OSB sheathing for walls, floors and roofs, with openings, roof pitch, 4x8, 4x9 or 4x10…
- Log Board Foot CalculatorCalculate board feet in a log with the Doyle, Scribner and International 1/4-inch log rules. Compare rules side by…
Finishes
- Drywall CalculatorCalculate drywall sheets for a room from wall and ceiling area, minus doors and windows, plus joint compound, tape and…
- Paint CalculatorCalculate how many gallons of paint and primer you need for a room from its walls, ceiling, doors, windows and number…
- Flooring CalculatorCalculate flooring square footage, boxes of hardwood, laminate or vinyl plank, or carpet square yards and roll length…
- Tile CalculatorCalculate how many tiles you need for a floor or wall from the area, tile size and grout joint, with waste, boxes and…
- Wallpaper CalculatorCalculate wallpaper rolls from wall width and height, roll size and pattern repeat, counting strips per roll for US…
- Trim and Molding CalculatorCalculate linear feet and pieces of baseboard, crown molding and door and window casing for a room, with waste and cost.
- Insulation R-Value CalculatorAdd up insulation R-values by material and thickness, compare to ENERGY STAR attic and floor recommendations by climate…
- Roofing CalculatorCalculate roofing squares, shingle bundles, ridge cap, starter strip, drip edge and underlayment from the roof…
- Siding CalculatorCalculate siding squares and panels for a house from its perimeter, wall height, gable ends and openings, with starter…
Site Work
- Excavation CalculatorCalculate excavation volume in bank and loose cubic yards for rectangles, round holes and trenches, with soil swell…
- Cut and Fill CalculatorCalculate cut and fill volumes for a building pad from four corner elevations, with shrinkage, swell, import or export…
- Slope and Grade CalculatorCalculate percent grade, slope ratio, angle and inches per foot from rise and run, or find the rise or run for a target…
- Retaining Wall Block CalculatorCalculate retaining wall blocks, caps, buried courses, base gravel and drain rock for a segmental block wall, with cost.