Concrete Cost Calculator

Estimate concrete material cost. Enter your slab dimensions and a price per cubic yard to see the waste-adjusted total.

Circle uses length as the diameter; width is ignored.

5% simple, 10% normal, 15% irregular, 20% complex.

Results

Concrete needed
1.23 cu yd
With 10% waste
1.36 cu yd
Cubic feet
33.33 cu ft
Cubic meters
0.94 m³
80 lb bags
62 bags
60 lb bags
82 bags
40 lb bags
123 bags

Estimates only. Round up and buy a little extra to account for waste, spills, and breakage.

Formula

Volume (cu ft) = area × thickness ÷ 12. Cubic yards = cu ft ÷ 27. Bags ≈ cu ft ÷ yield per bag.

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