Home & DIY calculators

Materials for building, remodeling and repair jobs. 45 calculators.

• Air conditioner size calculatorBTU rating for a window or portable AC, from the ENERGY STAR chart.
• Asphalt calculatorTons of asphalt for a driveway.
• Baluster spacing calculatorBaluster count and even gap under 4 in.
• Baseboard and trim calculatorLinear feet and pieces of baseboard, crown or chair rail.
• Battery runtime calculatorHours a battery or power station runs a load.
• Board foot calculatorBoard feet and cost for hardwood and rough lumber.
• Brick and block calculatorBricks or concrete blocks for a wall, with mortar bags.
• Carpet calculatorSquare yards of carpet and pad, by roll width.
• Caulk calculatorCaulk tubes for a joint length and size.
• Concrete calculatorCubic yards and 40, 60 or 80 lb bags for slabs, footings and round columns.
• Concrete steps calculatorConcrete volume for poured steps.
• Crown molding angle calculatorMiter and bevel angles for crown in any corner.
• Deck board calculatorDeck boards, linear feet and screws from the deck size and joist spacing.
• Deck stain calculatorStain for the deck surface, railings and steps.
• Diagonal calculatorDiagonal of a rectangle to check for square.
• Drywall calculatorSheets of 4 × 8, 4 × 10 or 4 × 12 drywall for walls and ceiling.
• Drywall mud and tape calculatorJoint compound, tape and screws for a drywall job.
• Duct size calculatorDuct diameter or rectangle for a CFM and velocity.
• Epoxy floor coating calculatorEpoxy kits for a garage or basement floor.
• Even spacing calculatorPositions to space any number of items evenly.
• Fence calculatorPosts, rails, pickets and post concrete for a wood fence.
• Flooring calculatorBoxes of laminate, vinyl plank or hardwood for a room, with waste.
• Generator size calculatorGenerator watts from your appliance list.
• Gravel calculatorCubic yards and tons of gravel, crushed stone or sand for any area and depth.
• Grout calculatorGrout volume and weight from tile size and joint width.
• Gutter calculatorGutters, downspouts and hangers for a roof edge.
• Heating BTU calculatorRough heating BTU for a space by climate.
• Insulation calculatorBags of batts or blown-in insulation for an area.
• Paint calculatorGallons and quarts for a room’s walls and ceiling, by coats and coverage.
• Paver calculatorPavers, base gravel and bedding sand for a patio or path.
• Rafter length calculatorRafter length, cut angles and ridge height.
• Rebar calculatorBars, laps, linear feet and weight for a slab rebar grid.
• Retaining wall calculatorBlocks, caps, base and drainage stone for a block wall.
• Roofing calculatorRoof area, squares and shingle bundles from the footprint and pitch.
• Siding calculatorSiding squares and pieces for walls and gables.
• Solar panel calculatorSystem size and panels to match your power use.
• Spray foam calculatorBoard feet, R-value and kits of spray foam.
• Square footage calculatorSquare feet for rooms, L-shapes, circles and triangles, with cost.
• Stair calculatorRisers, treads, run and stringer length from the total rise.
• Tank volume calculatorTank volume, including partly filled horizontal tanks.
• Thinset calculatorBags of thinset mortar by trowel notch.
• Tile calculatorTiles and boxes for a floor or wall, counting grout joints and cuts.
• Wall stud calculatorStuds and plates for framing a wall.
• Wallpaper calculatorRolls of wallpaper by strips, with pattern repeat.
• Wheelchair ramp calculatorRamp length and landings for a rise.