Engineering
Concrete volume
Estimate the volume of a rectangular slab.
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522 calculatorsConstruction calculators.
Plan materials, dimensions and your next project.
Browse the construction category subset →22 calculators · Star a calculator to find it in Favorites.
Engineering
Square footage
Square footage: use length, width. Review the formula, worked example and calculation steps.
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Tile quantity
Tile quantity: use length, width, tile length. Review the formula, worked example and calculation steps.
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Mulch volume
Mulch volume: use length, width, depth. Review the formula, worked example and calculation steps.
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Gravel volume & mass
Gravel volume & mass: use length, width, depth. Review the formula, worked example and calculation steps.
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Roof area · uniform pitch
Roof area · uniform pitch: use length, width, pitch rise per 12 horizontal units. Review the formula, worked example and calculation steps.
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Stair geometry
Stair geometry: use total vertical rise, maximum desired riser height, tread going. Review the formula, worked example and calculation steps.
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Paint quantity
Paint quantity: use room length, room width, wall height. Review the formula, worked example and calculation steps.
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Brick quantity
Brick quantity: use wall area, brick face length including joint, brick face height including joint. Review the formula, worked example and calculation steps.
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Wallpaper rolls
Wallpaper rolls: use wall area, usable coverage per roll, waste allowance. Review the formula, worked example and calculation steps.
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Asphalt quantity
Asphalt quantity: use length, width, compacted depth. Review the formula, worked example and calculation steps.
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Board feet
Board feet: use thickness, width, length. Review the formula, worked example and calculation steps.
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Fence posts
Fence posts: use fence run, maximum post spacing. Review the formula, worked example and calculation steps.
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Flooring cost
Flooring cost: use floor area, material price per area, waste allowance. Review the formula, worked example and calculation steps.
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Stair stringer length
Stair stringer length: use total rise, total horizontal run. Review the formula, worked example and calculation steps.
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Ramp slope
Ramp slope: use vertical rise, horizontal run. Review the formula, worked example and calculation steps.
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Roof pitch angle
Roof pitch angle: use rise, horizontal run. Review the formula, worked example and calculation steps.
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Drywall sheets
Drywall sheets: use area to cover, usable area per sheet, waste allowance. Review the formula, worked example and calculation steps.
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Concrete bags
Concrete bags: use required concrete volume, mixed yield per bag. Review the formula, worked example and calculation steps.
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Post-hole concrete
Post-hole concrete: use hole diameter, hole depth, number of holes. Review the formula, worked example and calculation steps.
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Rebar mass
Rebar mass: use bar diameter, total bar length, material density. Review the formula, worked example and calculation steps.
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Rectangular pool volume
Rectangular pool volume: use length, width, average filled depth. Review the formula, worked example and calculation steps.
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