How many bags are in a cubic yard?

Depends on bag size. 80 lb bags yield about 0.6 cubic feet each.

Should I order extra concrete?

Yes, add 5–10% extra for waste and spillage.

Multiply length, width, and depth to calculate cubic volume.

Estimate concrete volume, bags, and cost in seconds

Use this concrete calculator to estimate cubic yards, bags, and cost for slabs, patios, driveways, and footings.

Length (feet) Width (feet) Depth (inches) Bag Size Cost per Bag ($)

Enter your dimensions and get instant estimates for volume, bags, and cost.

10×12 slab at 6" depth ≈ 60 cu ft, ~2.22 yd³, ~200 bags.

How much concrete do I need?
Multiply length × width × depth.

How many bags per yard?
Depends on bag size.