How Many Square Feet Are In A Yard Of Concrete?

Ready mixed concrete is sold by volume measured in cubic yards. Concrete is priced by the yard, so measuring the square and cubic yardage is important for an accurate estimate.

Convert feet to yards when figuring out how much concrete is necessary for your remodeling project, new construction or home improvement repair.

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Calculate the volume you need in cubic yards

27 cubic feet

(image source: Google)

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If you have questions on how many yards of concrete you need for your project. Give us a call at (281) 247-0682 to let us know the measurements of your slab.

Concrete is sold by the yard. The first thing you need to do is figure out the size of the area you want to put your slab in. Then determine the depth of your material which, most slabs are about 4 inches thick.

In order to get our cubic yards. We have to first measure the areas width and length. This patio happens to be a 12×14 area. 12 feet wide by 14 feet long or 168 square feet.

Example: Take the length times the width of the area to get the total square footage. Then multiply that by the thickness of the concrete. If its 4 inches. 4″ is 1/3 of a foot (.35 ft., or 4 in.) in this example, it would be 56 cubic feet (12x14x0.33).

Then we have to convert that to cubic yards.

We know there are 3 feet in a yard, which means a cubic yard is 3 feet by 3 feet. So, in order to figure the number of feet in a yard. You take 3 feet times 3 feet to come up with 9 feet. Then multiply that by 3 (3 feet x 3 feet x 3 feet) which, gives you 27 cubic feet.

We take the 56 ft³ and divide it by 27 cu ft to get the total cubic yards of concrete needed, which is roughly 2.07 yd³ or round it up by 5% (2.17 yd³) to be safe. That’s the amount of concrete you’ll need to order from the ready mix plant pour and finish a 168 square feet area that is 4 inches in thickness.

The other way to figure the amount of concrete you need to order is divide 168 square feet by 80 or 81, which gives you 2.10 or 2.074 respectfully. Call your local concrete supplier and they can help you confirm the amount of concrete you’ll need for your slab pour.

Measure length and width then multiple by the thickness. To calculate how much concrete to use for a project. You start by measuring the length and width to get the square footage. Then multiply that number by whatever fraction of a foot the thickness is (e.g. 4 inches thick concrete for a new backyard patio or 6″ for a commercial driveway area).

  • 4″ thick is 1/3 of a foot
  • 3″ thick would be 1/4 of a foot
  • 6″ thick would be 1/2 of a foot

How many square feet are in a yard of concrete?

Concrete is sold in cubic yards, so the number of square feet in that yard depends upon how deep the concrete is poured. Concrete can be poured in different amount of thickness

For instance, if the slab being put in is 4 inches thick, one cubic yard of concrete covers 81 square feet. If it is 8 inches thick, a cubic yard fills 41 square feet. If the slab is 1 foot thick, a cubic yard covers only 21 square feet.

How many cubic feet are in one yard?

There are three feet in a yard, therefore, the number of cubic feet in a yard is actually the number of cubic feet in a cubic yard. The answer is (3 feet x 3 feet x 3 feet) which is equal to 27 cubic feet.

(source: reference)

Check with our office or a professional contractor for information specific to your project. We will ask you to let us know the size are you area and thickness you’re pouring to help you figure the amount you’ll need to order for your job. We always recommend you order a little bit more ready mix (10-15 percent) due to variances. If you have to order another truck. You’ll likely be paying a delivery charge in addition to the concrete. Sometimes you’ll have spillage, your forms (uneven subgrade) may be deeper in some areas that you didn’t account for in your measurements, etc. It’s sometimes better to be a little over than not having enough. Especially, if you’re paying finishers by the day and you want to get the job completed that same day. We have done these jobs a time or two ourselves. Learn from our mistakes and real life experiences.If you have questions, give us a call to learn more.

*The video and content on this page/website is for educational purposes only. Do you own due diligence or call a concrete professional to help you figure out the volume information.

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