Tool library

Construction calculators and estimators

Each tool separates base quantity, waste, purchase rounding, assumptions, examples, and sources.

Post Hole Concrete

Estimate concrete bags for fence, deck, and mailbox post holes with post displacement and waste.

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Concrete Slab Cost

Estimate concrete slab area, yards, material cost, labor range, and installed total.

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Flooring Area

Calculate room square footage, waste allowance, and flooring box count.

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Deck Stain

Estimate deck stain gallons by deck size, coats, coverage rate, railings, and waste.

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Stud Count

Estimate wall studs from wall length, spacing, corners, openings, and waste.

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Roof Square Footage

Estimate roof area from footprint, pitch, waste, roofing squares, and shingle bundles.

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Driveway Cost

Estimate concrete driveway square footage, yards, finish cost, removal allowance, and installed range.

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Sonotube Concrete

Calculate concrete volume and bag count for round cardboard form piers.

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Crushed Concrete

Estimate crushed concrete tons and cubic yards from area, compacted depth, density, and allowances.

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Epoxy Flooring Cost

Estimate epoxy floor kits, coated area, prep labor, and total cost range.

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Hardwood Refinishing

Estimate hardwood refinishing cost by square footage, finish type, coats, stairs, and region.

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Deck Joist Span

Look up cautious MVP deck joist spans for selected species, sizes, and spacing assumptions.

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Deck Footing

Check round deck footing diameter against a simplified load and soil-bearing model.

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Floor Joist Span

Compare a proposed residential floor joist span with a limited source-backed planning lookup.

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Wire Size

Look up common residential conductor sizes for selected circuit ratings with prominent electrical limitations.

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Metal Roof

Estimate metal roofing panels, adjusted roof area, pitch factor, and roofing squares.

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