How many 80 lb bags are in a cubic yard?

It takes about 45 80 lb bags to make one cubic yard of concrete.

How much does concrete weigh?

Normal-weight concrete averages about 2.0 tons per cubic yard.

Yes. A 5-10% cushion is standard because running short during a pour is expensive.

Inputs

Change any field and the results update instantly. Use supplier specs when you have them.

LengthftWidthftDepthinDensitytons/ydPrice per yard$Price unit

Tips & notes

Assumptions that most often change the final quantity in the field—so you order with clearer eyes.

Add 5-10% extra for forms, grade variation, and spillage.

Order ready-mix for larger pours; bags make sense for small pads and repairs.

A 4-inch slab is common for patios and walks; driveways often need 5-6 inches.

Have forms, reinforcement, and help ready before the truck arrives.

Related calculators

Calculate limestone base, driveway stone, or pathway material by yard and ton.

Calculate paver count, waste, and joint sand for patios, walkways, and driveways.

Estimate retaining wall blocks from wall length, height, block face size, and waste.