How many cubic yards is a 10x10 slab?

A 10×10 slab at 4 inches thick is about 1.23 cubic yards before waste.

Should I order ready-mix or bags?

Use bags for small jobs under about half a yard; order ready-mix for larger pours.

To find how much concrete you need, multiply length × width × thickness, convert to cubic yards, then add 5–10% for waste.

Volume in cubic feet = length (ft) × width (ft) × thickness (in) ÷ 12.

Cubic yards = cubic feet ÷ 27. Concrete is ordered and priced by the cubic yard.

For a 10 ft × 12 ft slab at 4 inches thick: 10 × 12 × (4 ÷ 12) = 40 cubic feet.

40 ÷ 27 = 1.48 cubic yards. With 10% waste, order about 1.63 cubic yards.

Add 5% for simple slabs on level ground, 10% for typical jobs, and up to 15% when the subgrade is uneven or the forms are complex.

Running short mid-pour means a cold joint, so it is always safer to round up.

How many cubic yards is a 10x10 slab?: A 10×10 slab at 4 inches thick is about 1.23 cubic yards before waste.
Should I order ready-mix or bags?: Use bags for small jobs under about half a yard; order ready-mix for larger pours.

Estimate cubic yards, bags, and cost of concrete for slabs, footings, and columns.

Estimate the total cost of concrete by entering a price per cubic yard.

Find tons and cubic yards of gravel or crushed stone for driveways and paths.