How many 60 lb bags make a cubic yard?

About 60 bags, since each yields roughly 0.45 cubic feet and a yard is 27 cubic feet.

How thick should a patio slab be?

Four inches is standard for patios and walkways; go to six inches for driveways and heavy loads.

Yes — order 5–10% more to cover uneven ground and spillage.

Concrete Calculator

Concrete volume equals length × width × thickness (in feet), divided by 27 to get cubic yards. A 4-inch slab is 0.333 ft thick.

Length(ft)

Width(ft)

Thickness(in)

Your result

Concrete needed

2.47 cu yd

Volume66.67 cu ft

60 lb bags149

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Patios and slabs scoped from yard photos.

EstimateVision reads the scope from photos, video and voice, prices it for your area, and sends a signed proposal on the spot.