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Construction

Job-site and DIY calculators for building materials, lumber, concrete, decks, roofing, and layout.

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Lumber

Construction

Volume and tally tools for boards, dimensional lumber, and millwork.

Browse Lumber

Concrete

Construction

Volume and material calculators for concrete slabs, footings, and pours.

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Decks

Construction

Board count and stair layout calculators for wood and composite decks.

Browse Decks

Roofing

Construction

Pitch and angle calculators for roof framing and material estimation.

Browse Roofing

Materials

Construction

Quantity and weight estimators for gravel, fill, and bulk construction materials.

Browse Materials

Flooring

Construction

Square footage, waste, box, roll, and sheet counts for floor coverings and subfloor.

Browse Flooring

Paint

Construction

Gallons and coverage for walls, primer, trim, and wood stain.

Browse Paint

Board Feet Calculator

Lumber

Convert thickness, width, length, and piece count into board feet using the standard lumber tally.

Open Board Feet

Linear Feet to Board Feet Converter

Lumber

Convert a run of linear feet at a nominal thickness and width into board feet.

Open Linear Feet to Board Feet

Concrete Volume Slab Calculator

Concrete

Find cubic yards of concrete needed for a rectangular slab from length, width, and thickness.

Open Concrete Volume

Deck Board Count Calculator

Decks

Estimate the number of deck boards needed for a rectangular deck area at a given board width and gap.

Open Deck Board Count

Deck Stair Stringer Calculator

Decks

Calculate stair rise, run, stringer length, and step count from total rise and preferred tread depth.

Open Stair Stringer

Roof Pitch to Angle Calculator

Roofing

Convert a roof pitch expressed as rise-over-run (e.g. 6/12) to the corresponding angle in degrees.

Open Roof Pitch to Angle

Gravel Tons by Area and Depth Calculator

Materials

Estimate tons of gravel or crushed stone needed for a rectangular area at a given depth and material density.

Open Gravel Tons

French Drain Gravel Calculator

Materials

Estimate the washed drainage stone for a french drain trench in cubic yards and tons, subtracting the perforated pipe.

Open French Drain Gravel

Topsoil and Fill Dirt Calculator

Materials

Estimate topsoil or fill dirt for a rectangular area in cubic yards and tons, with an optional allowance for settling.

Open Topsoil and Fill

Asphalt Tonnage Calculator

Materials

Estimate the tons of hot-mix asphalt for a paving area from length, width, compacted thickness, and mix density.

Open Asphalt Tons

Paver Base and Sand Calculator

Materials

Estimate crushed-stone base and bedding sand for a paver patio or walkway in cubic yards and tons, with a base compaction allowance.

Open Paver Base and Sand

Excavation Cut and Fill Calculator

Materials

Convert excavation bank volume into loose and compacted volumes with swell and shrink factors, and check the cut and fill balance.

Open Cut and Fill

Flooring Area & Waste Calculator (Boxes)

Flooring

Turn a room rectangle or known area, a waste percent, and coverage per box into the number of flooring boxes to order.

Open Flooring Area & Waste

Underlayment Roll Count Calculator

Flooring

Estimate rolls of foam, cork, or felt underlayment from floor area, roll coverage, and an overlap percent.

Open Underlayment Rolls

Subfloor Plywood / OSB Sheet Calculator

Flooring

Estimate how many 4x8 plywood or OSB panels you need to sheathe a floor area, with a cut-and-fit waste allowance.

Open Subfloor Sheets

Paint Calculator: Gallons for a Room

Paint

Estimate gallons of wall paint from room size, door and window openings, coats, spread rate, and waste.

Open Room Paint Gallons

Primer Calculator: How Much Primer You Need

Paint

Estimate gallons of primer for a known area from the coat count, primer spread rate, and a waste allowance.

Open Primer Amount

Trim Paint Calculator: Gallons for Baseboard and Casing

Paint

Estimate trim paint from the linear feet of baseboard, casing, and doors, the trim height, coats, and spread rate.

Open Trim Paint Gallons

Wood Stain Calculator: Coverage and Gallons

Paint

Estimate gallons of deck or fence stain from the area, coats, stain spread rate, and a waste allowance.

Open Wood Stain Coverage