Construction Calculators
Estimate materials, quantities and dimensions for building, renovation and DIY projects.
Fence Calculator
Estimate fence panels and posts from your project dimensions.
Open calculator →ConstructionGravel Calculator
Estimate cubic yards and approximate tons of gravel required.
Open calculator →ConstructionSand Calculator
Estimate sand volume, weight, tons, tonnes and optional material cost from project dimensions.
Open calculator →ConstructionTopsoil Calculator
Estimate topsoil volume, bags, weight and optional cost from area and soil depth.
Open calculator →ConstructionBoard Foot Calculator
Calculate lumber volume in board feet and estimate cost.
Open calculator →ConstructionConcrete Slab Calculator
Estimate cubic yards of concrete required for a slab.
Open calculator →ConstructionRebar Calculator
Estimate rebar quantity, length and weight for a slab grid.
Open calculator →ConstructionPaint Calculator
Estimate gallons of paint required for interior walls.
Open calculator →ConstructionMulch Calculator
Estimate mulch in cubic yards and bag quantities.
Open calculator →ConstructionRoofing Calculator
Estimate roofing squares and shingle bundle quantities.
Open calculator →ConstructionRoof Square Footage Calculator
Estimate sloped roof area from footprint and roof pitch.
Open calculator →ConstructionRoof Pitch Calculator
Calculate roof pitch, angle, slope percentage and slope factor.
Open calculator →ConstructionRoof Slope Calculator
Convert roof angle to pitch, slope percentage and slope factor.
Open calculator →ConstructionRoof Shingle Calculator
Estimate roof shingle bundles and roofing squares.
Open calculator →ConstructionCubic Yard Calculator
Calculate cubic yards from length, width and depth.
Open calculator →ConstructionCubic Feet Calculator
Calculate cubic feet from length, width and height.
Open calculator →ConstructionDrywall Calculator
Estimate drywall sheets needed from room dimensions and sheet size.
Open calculator →ConstructionStair Calculator
Estimate stair risers, treads, riser height and total run.
Open calculator →ConstructionDeck Material Calculator
Estimate deck board rows and linear feet of decking.
Open calculator →ConstructionPool Volume Calculator
Estimate pool volume in gallons and liters.
Open calculator →ConstructionConcrete Calculator
Calculate concrete volume in cubic yards with waste allowance.
Open calculator →ConstructionConcrete Weight Calculator
Estimate concrete weight from dimensions or known volume using an editable concrete density.
Open calculator →ConstructionSquare Footage Calculator
Calculate square footage from length and width.
Open calculator →ConstructionLinear Feet Calculator
Calculate total linear footage with optional waste.
Open calculator →ConstructionConcrete Bag Calculator
Estimate premixed concrete bags for a rectangular pour.
Open calculator →ConstructionPost Hole Concrete Calculator
Estimate concrete volume and premix bags for circular post holes.
Open calculator →ConstructionConcrete Footing Calculator
Estimate concrete volume for rectangular foundation footings.
Open calculator →ConstructionConcrete Wall Calculator
Calculate concrete volume for poured walls.
Open calculator →ConstructionConcrete Block Calculator
Estimate masonry blocks, courses, waste and cost for a wall.
Open calculator →ConstructionRetaining Wall Block Calculator
Estimate retaining wall blocks, courses, buried base rows, caps, waste and optional cost.
Open calculator →ConstructionBrick Calculator
Estimate bricks needed for walls using brick size, mortar joints, openings, layers and waste.
Open calculator →ConstructionMortar Calculator
Estimate masonry mortar volume, dry materials, cement bags and sand from wall, brick or block, joint and mix dimensions.
Open calculator →ConstructionConcrete Driveway Calculator
Estimate concrete required for a driveway or parking pad.
Open calculator →ConstructionAsphalt Calculator
Estimate asphalt volume, tons, tonnes and optional material cost from area and compacted thickness.
Open calculator →ConstructionPaver Calculator
Estimate pavers needed for patios and walkways.
Open calculator →ConstructionFlooring Calculator
Estimate flooring square footage and boxes required.
Open calculator →ConstructionTile Calculator
Estimate tiles needed from project area and tile dimensions.
Open calculator →ConstructionSiding Calculator
Estimate siding square footage and siding squares.
Open calculator →ConstructionStud Calculator
Estimate wall studs from wall length and stud spacing.
Open calculator →ConstructionBTU Calculator
Estimate basic room cooling capacity in BTU per hour.
Open calculator →Helpful Guides
Go beyond the calculator with practical explanations, formulas and worked examples.
How to Calculate Concrete: Cubic Yards, Bags and Waste
Learn how to calculate concrete volume in cubic feet and cubic yards, estimate concrete bags, and account for waste.
ConstructionHow to Calculate Square Footage for Floors, Walls and Rooms
Learn how to calculate square footage for rectangular rooms, walls, flooring and irregular spaces with simple examples.
ConstructionHow to Calculate Cubic Yards for Gravel, Mulch and Concrete
Learn how to calculate cubic yards from length, width and depth for gravel, mulch, soil and concrete projects.
Construction and DIY estimating tools
Construction calculators help turn project dimensions into material quantities, areas, volumes and layout estimates. The collection includes concrete, roofing, framing, flooring, landscaping and general measurement tools for early project planning.
Choosing the right calculator
Start with the calculator that matches the material or geometry of the job. A general area or volume calculator can help with basic dimensions, while dedicated concrete, roofing, flooring and framing tools include assumptions specific to those materials.
- Measure the actual project dimensions before relying on a material estimate.
- Use product-specific coverage or yield figures whenever the calculator allows them.
- Treat structural, code and safety decisions separately from quantity calculations.