What Is The Formula For Estimating Square Yards For Concrete?

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Osbourne Ruddock Profile
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.
Anonymous Profile
Anonymous answered
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)
Larry Patterson Profile
Larry Patterson answered
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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Anonymous