Construction
Free construction calculators for concrete, gravel, mulch, paint, tile and square footage, with the coverage rates and waste allowances written out in full.
46 calculators
Earthwork & landscape
Gravel CalculatorGravel needed by area, depth and compacted density.Mulch CalculatorMulch volume and bag count for a bed of any depth.Sand CalculatorSand needed for a patio base, sandbox or mortar.Topsoil CalculatorTopsoil volume for a lawn or raised bed.Cubic Yards CalculatorCubic yards from feet, inches or metres, for a pour.Elevation Grade CalculatorGrade and slope percentage from a rise over a run.Grass Seed CalculatorGrass seed needed for a lawn area and seed type.Gravel Driveway CalculatorGravel tonnage and cost for a driveway, by depth.River Rock CalculatorRiver rock needed by area and depth, with wastage.Sod CalculatorSod rolls for a lawn, using your own roll size and waste.Soil CalculatorSoil bags for a raised bed or planter, plus volume.Square Yards CalculatorSquare yards from feet, inches or metres.Stone CalculatorHow much ground a ton of crushed stone covers at any depth.
Concrete & masonry
Concrete CalculatorConcrete volume in cubic yards or metres, plus bags.Brick CalculatorBrick count and mortar from wall area and brick size.Concrete Block CalculatorConcrete blocks and mortar needed for a wall.Concrete Block Fill CalculatorConcrete needed to fill the cores of blockwork.Concrete Weight CalculatorWeight of a concrete pour from its volume.Post Hole Concrete CalculatorConcrete bags needed to set a run of posts.
Roofing & flooring
Flooring CalculatorFlooring needed for a room, with waste allowance.Roofing CalculatorRoof area, squares, shingle bundles and underlayment rolls.Carpet CalculatorCarpet area and cost for a room, with waste.Paver CalculatorPavers, sand and base gravel for a patio or path.Roof Pitch CalculatorRoof pitch to angle, multiplier, rafter length and roof area.
Paint & wall
Paint CalculatorPaint needed for a room, deducting doors and windows.Tile CalculatorTile count and boxes for a floor or wall area.Drywall CalculatorDrywall sheets, mud and tape for a room or a ceiling.Retaining Wall CalculatorBlocks, caps and gravel for a retaining wall.Vinyl Siding CalculatorVinyl siding squares needed for a wall area.Wallpaper CalculatorWallpaper rolls needed, allowing for pattern repeat.
Area & coverage
Materials
Carpentry & framing
Baluster CalculatorBaluster count and spacing for a railing run.Deck Stain CalculatorStain needed for a deck, by coats and board area.Fence CalculatorPosts, rails and pickets for a fence run.Fence Stain CalculatorStain needed for a fence, both sides and all coats.Framing CalculatorStuds, plates and board feet for a framed wall.Lumber Weight CalculatorWeight of lumber from species, dimensions and count.Plywood CalculatorSheets of plywood needed for a floor, wall or roof.Rafter Length CalculatorRafter length from span, pitch and overhang.Vinyl Fence CalculatorVinyl panels, posts and caps for a fence run.
Other categories
Every calculator on CalcMax, grouped by what you are trying to work out.
MathPercentages, fractions, geometry, algebra and number bases.FinanceLoans, mortgages, interest, tax and investment returns.PhysicsMotion, forces, electricity, thermodynamics and optics.Health & FitnessBMI, calories, body fat, heart rate and nutrition targets.StatisticsAverages, standard deviation, probability and grade curves.Date & TimeAge, date differences, durations, time zones and conversions.BiologyGenetics, populations, microbiology and animal dosing.SportsPace, splits, running and cycling performance metrics.ChemistryMolarity, dilutions, reactions and stoichiometry.Food & CookingRecipe scaling, baking ratios, cooking conversions.ElectronicsOhm's law, resistors, wire gauge, batteries and signals.AutomotiveFuel cost, gas mileage and trip planning.OtherBra sizing and random password generation.