Construction Calculators
Free construction and home-improvement calculators for concrete, paint, flooring, roofing and building materials — estimate quantities and costs accurately.
Ad Space
Angles and Layout
Miter Angle CalculatorFind the miter saw angle for a multi-sided frame or shape.Bolt Circle CalculatorFind bolt spacing and angle for a bolt circle pattern.Countersink Depth CalculatorFind the drilling depth for a countersunk screw head.Elevation Grade CalculatorFind slope percent, angle and slope distance from rise and run.
Cement and Concrete
Concrete CalculatorEstimate cubic yards of concrete and bags needed for a slab.Concrete Block CalculatorEstimate how many CMU blocks you need for a wall.Concrete Bag CalculatorFind how many bags of pre-mixed concrete you need.Cement CalculatorFind how many bags of cement a mix ratio requires.Mortar CalculatorFind how much mortar you need for a count of bricks or blocks.Grout CalculatorEstimate how much tile grout you need by joint size.Concrete Column CalculatorFind the concrete volume for a round column or pier.Thinset CalculatorFind how many bags of thinset mortar you need for tile.Concrete Weight CalculatorFind the weight of a poured concrete slab.
Construction Materials
Brick CalculatorEstimate how many bricks you need for a wall.Drywall CalculatorFind how many sheets of drywall you need for a room.Gravel CalculatorEstimate cubic yards and tons of gravel needed.Bolt Torque CalculatorLook up recommended dry torque values by bolt size and grade.Plywood CalculatorFind how many sheets of plywood you need for an area.Framing CalculatorFind how many wall studs you need for a wall.Sand CalculatorEstimate cubic yards and tons of sand needed.Tile CalculatorFind how many tiles you need for a floor or wall.Metal Weight CalculatorFind the weight of a metal bar, plate or sheet.Steel Rebar Weight CalculatorFind the total weight of rebar from size, length and quantity.Lumber Weight CalculatorEstimate the weight of dimensional lumber by species.Thread Pitch CalculatorConvert between threads per inch (TPI) and thread pitch in mm.
Converters
Cubic Yard CalculatorConvert length, width and height into cubic yards of material.Square Yards CalculatorConvert a room or lot's length and width into square yards.Gallons per Square Foot CalculatorFind the coverage rate of a liquid from area and gallons used.Board Foot CalculatorFind the board footage of lumber from its dimensions.Square Footage CalculatorAdd up the total square footage of multiple rooms or sections.
Driveway
Home and Garden
Paint CalculatorFind how many gallons of paint you need for a room.Flooring CalculatorFind how many boxes of flooring you need for a room.Fence CalculatorEstimate fence posts and panels needed for a yard.Wallpaper CalculatorFind how many rolls of wallpaper you need for a room.AC Tonnage CalculatorEstimate the air conditioner size needed for a space.Insulation CalculatorFind how many packages of batt insulation you need.Furnace Size CalculatorEstimate the furnace output needed to heat a home.Deck Stain CalculatorFind how many gallons of stain you need for a deck.Stair CalculatorFind riser height, tread run and stair angle for a staircase.Vinyl Siding CalculatorFind how many squares of siding you need for a house.Paver CalculatorFind how many pavers you need for a patio or walkway.Boiler Size CalculatorEstimate the boiler output needed to heat a home.Round Pen CalculatorFind fencing needed for a circular pen or arena.Carpet CalculatorFind how many square yards of carpet you need, based on roll width.Heat Loss CalculatorEstimate a building's heat loss from wall and window R-values.
Roofing
Roofing CalculatorEstimate roofing squares needed from roof dimensions and pitch.Roof Shingle CalculatorFind how many bundles of shingles you need for a roof.Rafter Length CalculatorFind rafter length from horizontal run and roof pitch.Roof Truss CalculatorFind how many roof trusses you need for a given roof length.Roof Pitch CalculatorFind roof pitch, angle and percent slope from rise and run.Roof Snow Load CalculatorEstimate flat-roof snow load from ground snow load and site factors.
Structural
Beam Deflection CalculatorEstimate the sag of a simply-supported beam under a center load.Wood Beam Span CalculatorLook up a simplified maximum span for common joist sizes.Floor Joist CalculatorFind how many floor joists you need for a given run.Beam Load CalculatorEstimate the maximum safe center load a rectangular beam can carry.
Water Tank and Vessels
Pool CalculatorFind the volume of a pool in gallons.Tank Volume CalculatorFind the volume of a cylindrical or rectangular tank in gallons.Pipe Volume CalculatorFind the water volume held inside a length of pipe.Gallons Per Minute (GPM) CalculatorEstimate flow rate from pipe diameter and water velocity.Pond CalculatorEstimate the water volume of an irregular garden pond.
Ad Space