# What Is The Formula For Estimating Square Yards For Concrete?

The formula for estimating square yards for concrete is as follows;

Length (ft) x Width (ft) x Depth (in) = X

You then need to divide X by 324 to get the total in square yards.

If you are unsure about measuring for concrete, it would be advisable to get an experienced builder to help. A free and easy way of doing this would be to request a builder to come out and give you a quote for the work you want done; such as concreting a driveway. After indicating the area you want covered, the builder will normally give you a quote for the work, with the measurements they have taken to validate the quote.

This is a better tactic than trying to take measurements yourself - a wrong calculation could be lead to a large error. It is possible you could order too much concrete or far too little - leading to a major headache and waste of money.

If you are planning on laying the concrete yourself, it is important to know the correct method of doing so. Taking a short-cut by doing it yourself may save money on builder's fees, but could actually cost more if you then need to pay for someone to rectify your mistakes.
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20' x 14' x 6'' how many yards of concrete will I need
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Length (feet) x Width (feet) x Depth (inches) = X

X divided by 324 will give how many CY you need

Example: A patio of 12 feet by 10 feet at 6 inches deep = (12' x 10' x 6") / 324 = approx. 2.25 cubic yards (2.22 rounded to a typical delivery amount)
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JACQUELYN LITTLE commented
WOULDN'T IT BE 3.00CY's?
if u round 2.25,u should round it up or u may not have enough concrete.right?
20 x12 on 4x4corageted steel 8in
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Square yards would just be length times width.
If measured in feet, length times width, answer divided by 9 for SY.
The first answer is excellent for CY, note feet for l and w, depth in inches.
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