Construction Materials Calculators
Free construction calculators for concrete, gravel, stone, sand, pavers, bricks, mortar, rebar, footings, slabs, driveways, and more. Enter dimensions and get practical material quantities, waste allowances, and optional cost estimates.
Try it — Concrete Slab
Slab — total concrete
1.36 yd³
62 × 80 lb bags
Materials only. Excludes labour, forms, delivery, pump, finishing. Structural work requires local code compliance and engineer drawings.
ft
ft
in
slabs
10%
Net volume33.33 ft³
Gross volume36.67 ft³
Cubic yards1.36 yd³
Cubic meters1.039 m³
Net volume33.33 ft³
Gross volume36.67 ft³
Cubic yards1.36 yd³
Ready-mix order1.5 yd³
80 lb bags62
60 lb bags82
40 lb bags123
Cost (80 lb)$403
Cost (60 lb)$410
Cost (40 lb)$431
Cost (ready-mix)$218
Cost band (materials only — min/max across all options)
$218to$431
Edit price assumptions
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Change any dimension — the whole order updates. Full slab calculator → for formulas, reference tables, and FAQ.
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Concrete tools — 11
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