🧱 Construction & Trades Calculators
Material take-offs for the jobs that get quoted by the square foot and delivered by the cubic yard — concrete, roofing, drywall, flooring, tile, fencing, gravel and paint. Every calculator states the waste allowance it applies and shows the raw quantity before it, so you can price a job against your own supplier's units instead of a hidden rule of thumb.
Solve real power, voltage, or current for DC, single-phase AC, and balanced three-phase AC scenarios.
Open calculator →Estimate drywall surface, layer coverage, waste, and whole sheets using editable panel dimensions.
Open calculator →Estimate posts, equal intervals, and horizontal rail length for one or more independent straight fence runs.
Open calculator →Calculate board-foot lumber volume from thickness, width, length, equal-piece count, units, and explicit waste.
Open calculator →Estimate flooring area and whole packages from room dimensions, exclusions, waste, and labeled box coverage.
Open calculator →Estimate simple gable roof surface, roofing squares, and whole bundles from plan dimensions, pitch, waste, and coverage.
Open calculator →Estimate whole tiles and boxes from rectangular surfaces, exclusions, waste, actual tile face dimensions, and box count.
Open calculator →Estimate rectangular gravel volume in cubic yards and metres, plus weight from an editable supplier density.
Open calculator →Estimate mulch volume for a rectangular bed and whole bags from the labeled package volume.
Open calculator →Estimate wall paint from equal wall dimensions, openings, coats, product coverage, reserve, and can size.
Open calculator →Calculate the total square footage of one or more equal rectangles with exact metric conversions.
Open calculator →Estimate rectangular slab volume, ready-mix allowance, and whole bags from package-specific yield.
Open calculator →Estimate appliance electricity use and cost from power, runtime, schedule, device count, and price per kWh.
Open calculator →Estimate concrete for a strip or trench footing from its cross-section and run length, plus a yd³-per-100-ft rate.
Open calculator →Estimate concrete for round tube-form columns or pier footings from diameter, height, and pier count.
Open calculator →Split a concrete volume into cement, sand, and aggregate using your own volumetric ratio, such as 1:2:3.
Open calculator →Total ready-mix concrete cost from volume, your supplier's price, delivery, a short-load fee, and sales tax.
Open calculator →Total rebar weight and stock-bar count from bar size, piece count, length, and a waste allowance.
Open calculator →Estimate concrete for a solid poured stair flight from width, rise, run, and step count.
Open calculator →Compare total cost of bagged dry-mix against ready-mix delivery for the same volume of concrete.
Open calculator →Estimate concrete for a poured wall from length, height, and thickness, with door and window openings excluded.
Open calculator →Estimate concrete for a tapered or uniform retaining wall from top width, bottom width, height, and length.
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