Free Construction Calculators

Plan your next building project with precision. Professional-grade calculators for concrete, paint, roofing, decking, and more — completely free.

34 Calculators 40 Guides 100% Free

Concrete Calculator

Calculate cubic yards or meters of concrete for slabs, footings, and columns.

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Paint Calculator

Estimate gallons or liters of paint needed based on room dimensions.

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Deck Cost Calculator

Estimate materials, labor, and total cost for your deck project.

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Fence Calculator

Calculate posts, panels, and total cost for your fencing project.

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Roofing Calculator

Determine bundles of shingles needed based on roof dimensions.

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Tile/Flooring Calculator

Calculate square footage and tiles needed with waste factor included.

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Drywall Calculator

Determine sheets of drywall required for your room dimensions.

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Mulch/Soil Calculator

Calculate cubic yards of mulch or soil for garden beds.

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Brick/Block Calculator

Estimate bricks or blocks needed for your masonry project.

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Lumber Calculator

Calculate board feet and estimated cost for lumber orders.

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Insulation Calculator

Calculate insulation depth and quantity by R-value for attics, walls, and floors.

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Gravel Calculator

Estimate tons and cubic yards of gravel for driveways and landscaping.

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Staircase Calculator

Design stairs with proper rise, run, and stringer dimensions.

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Retaining Wall Calculator

Calculate blocks, backfill, and costs for retaining walls.

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Bathroom Remodel Calculator

Estimate the total cost of a bathroom renovation project.

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Countertop Calculator

Calculate countertop square footage and costs for any material.

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HVAC BTU Calculator

Calculate heating and cooling BTU requirements for any room or building.

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Electrical Wire Calculator

Determine the correct wire gauge based on amperage and distance.

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Pool Volume Calculator

Calculate swimming pool water volume in gallons and liters.

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Landscaping Cost Calculator

Estimate full landscaping costs including sod, plants, and hardscaping.

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Window Replacement Calculator

Calculate window replacement costs and energy savings estimates.

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Solar Panel Calculator

Size a solar system and estimate costs, savings, and payback period.

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Block Fill Calculator

Calculate concrete or grout needed to fill CMU block cores.

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Home Inspection Cost Estimator

Estimate repair costs from your home inspection report. Categorized by Must-Fix, Should-Fix, and Nice-to-Have.

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Aging-in-Place Calculator

Estimate home accessibility modification costs — grab bars, walk-in showers, ramps, stair lifts, and more.

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Flooring Cost Calculator

Compare hardwood, laminate, LVP, tile, and carpet costs with installation and waste factor.

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Garage Door Cost Calculator

Calculate garage door replacement costs by material, size, opener, and insulation options.

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Concrete Stairs Calculator

Calculate concrete volume, rebar, and cost for poured stairs with landing platforms.

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Concrete Countertop Calculator

Plan DIY concrete countertops — mix, fiber, sealer, pigment, and edge profiles.

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Concrete Driveway Calculator

Calculate thickness, rebar grid, sub-base gravel, expansion joints, and total driveway cost.

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Curb & Gutter Calculator

Estimate concrete for curbs and gutters by profile type — standard, rolled, barrier, or custom.

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Post Hole Concrete Calculator

Calculate bags of concrete per fence post, deck post, or mailbox with gravel base and cure times.

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Retaining Wall Drainage Calculator

Calculate drainage gravel, perforated pipe, and filter fabric behind a retaining wall.

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Concrete Patio Calculator

Calculate concrete volume, rebar, sub-base, and cost for rectangular, L-shaped, or circular patios.

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