Home/Calculators

All calculators

88 calculators across 13 trades, all in US imperial units. Switch at the top right.

Concrete & Masonry

Concrete Slab CalculatorVolume, bags and ready-mix for slabs, patios and bases Concrete Footing CalculatorContinuous footings and foundation trenches Concrete Pier & Sonotube CalculatorRound or square piers, columns and post pads Concrete Steps CalculatorPoured steps with a top landing Concrete Wall CalculatorPoured walls and foundation walls, minus openings Fence Post Concrete CalculatorBags per post hole, with gravel base Rebar CalculatorBars, laps, weight and ties for a slab grid Wire Mesh CalculatorSheets of slab mesh with overlaps Concrete Block (CMU) CalculatorBlocks and mortar for a block wall Brick CalculatorBricks and mortar by wall area Mortar CalculatorMortar for a known number of bricks or blocks Paver CalculatorPavers, base, bedding sand, joint sand and edging Retaining Wall Block CalculatorBlocks, caps, base and drainage stone

Framing & Carpentry

Wall Framing CalculatorStuds, plates and sheathing for a framed wall Floor Joist CalculatorJoist count, rim, hangers, blocking and subfloor Rafter Length CalculatorRafter length, rise, cut angles and count Board Foot CalculatorBoard feet and lumber cost Plywood & Sheathing CalculatorOSB, plywood and board sheets for an area Baseboard & Trim CalculatorLengths of trim for rooms, minus doors Crown Molding Angle CalculatorMiter and bevel settings for any wall angle Miter Angle CalculatorCut angles for any corner or polygon

Roofing

Roofing CalculatorSquares, shingles, underlayment, starter, ridge and drip edge Roof Pitch CalculatorConvert rise/run, x/12, degrees and percent Metal Roofing CalculatorPanels, trim, closures and screws Gutter CalculatorGutter lengths, downspouts, hangers and fittings Attic Ventilation CalculatorNet free area for intake and exhaust

Walls & Finishes

Drywall CalculatorSheets, screws, mud and tape for a room Stucco & Plaster CalculatorStucco, veneer and patch plaster Insulation CalculatorBatts, rolls or blown-in to an R-value Drop Ceiling CalculatorTiles, mains, cross tees, wall angle and wires Wallpaper CalculatorRolls needed with pattern repeat Paint CalculatorPaint for walls and ceilings, with coats and tin sizes Exterior Paint CalculatorHouse walls and gables, with surface texture Siding CalculatorSquares of siding with starter, J-channel and corners

Flooring & Tile

Flooring CalculatorBoxes of laminate, vinyl plank or wood, plus underlay Tile CalculatorFloor or wall tiles, boxes, adhesive and grout Grout CalculatorGrout weight by tile size and joint Thinset CalculatorThinset bags by trowel notch Carpet CalculatorRoll length from roll width, pad, gripper and seams Self-Leveling & Floor Leveling CalculatorBags of self-leveler or mortar bed Epoxy Floor CalculatorCoating kits for garage and shop floors

Decking & Fencing

Deck Board CalculatorBoards, screws or clips for a deck surface Deck Framing CalculatorJoists, beams, posts, footings and hardware Deck Stain CalculatorStain or oil for deck, rails and steps Fence CalculatorPosts, rails, pickets and concrete Chain Link Fence CalculatorFabric, posts, rail and fittings

Stairs, Ramps & Rails

Stair CalculatorRisers, treads, stringer length and code checks Wheelchair Ramp CalculatorRamp length, landings and slope check Baluster Spacing CalculatorEven spacing under the 4" or 100 mm rule

Landscaping & Earthworks

Mulch CalculatorCubic yards and bags of mulch Gravel CalculatorTons and cubic yards of gravel or stone Topsoil CalculatorSoil for lawns, beds and levelling Sand CalculatorSand by volume and weight Sod CalculatorPieces, rolls and pallets of sod Grass Seed CalculatorSeed by grass type, for new lawns or overseeding Lawn Fertilizer CalculatorProduct needed for a target nitrogen rate Plant Spacing CalculatorPlants for a bed at square or triangular spacing Raised Garden Bed Soil CalculatorSoil to fill raised beds Excavation CalculatorDig volume, swell, spoil weight and truck loads Pool Volume CalculatorGallons in a pool or hot tub Pond Liner CalculatorLiner and underlay size for a pond

Plumbing & Water

Pipe Volume CalculatorWater in a pipe run, and time to get hot water Drain Slope CalculatorDrop over a run at ¼" per foot Tank Volume CalculatorCylinder or rectangular tank, full or part-filled Flow Rate CalculatorBucket test to flow, and time to fill

Electrical & Lighting

Voltage Drop CalculatorDrop for a cable run, and the smallest size that passes Ohm’s Law & Watts CalculatorVolts, amps, ohms and watts from any two Electricity Cost CalculatorRunning cost of an appliance or tool Recessed Lighting CalculatorHow many lights for a room, and spacing

Heating, Cooling & Air

BTU CalculatorAir-conditioning and heating size for a room Exhaust Fan CFM CalculatorBath and kitchen fan size in CFM

Measure & Convert

Square Footage CalculatorArea of rectangles, circles, triangles and L-shapes Cubic Yard CalculatorVolume for boxes and cylinders, in every unit Construction Unit ConverterLength, area, volume and weight Feet and Inches CalculatorAdd, subtract, multiply and divide tape measurements Inch Fraction CalculatorDecimals, fractions and millimetres Right Triangle & Diagonal CalculatorHypotenuse, angles and squaring a layout Slope & Grade CalculatorPercent grade, degrees and drop over distance Circle & Arc CalculatorCircumference, area, arc length and radius from chord Material Weight CalculatorTons or tonnes from volume, and trailer checks Even Spacing CalculatorSpace posts, studs or balusters evenly with marks

Pricing & Business

Markup & Margin CalculatorPrice from cost, and the difference between markup and margin Contractor Hourly Rate CalculatorWhat to charge per hour and per day to hit your income Job Cost & Bid CalculatorTurn costs into a bid with overhead, profit and tax Sales Tax CalculatorAdd or remove sales tax Travel & Mileage Cost CalculatorWhat site travel really costs a job Crew Hours CalculatorLabour hours and cost from start and finish times Price per Square Foot CalculatorCompare quotes or price by area