How to Calculate Concrete Measurements
Calculating concrete measurements is a simple volumetric calculation that may require a few conversions (see Tips). Concrete is best calculated by the cubic yard or by fractions of a cubic yard. Having a calculator handy will make these calculations easier.
Things You Will Need
 Calculator
 Tape measure
 Scratch paper
 Pen or pencil
Tip
1 cubic foot = 1,728 cubic inches 1 cubic yard = 27 cubic feet

Find the area of the planned concrete slab by measuring the length and the width of the available space for the slab. Multiply these two measurements together (length x width).

Determine the desired thickness of the slab. A 4inch thickness is plenty for most applications. If you plan on pouring a slab that will be used to store really heavy items, such as an RV, a 6inch thickness would be advisable.

Multiply the area by the desired thickness [(length x width) x thickness]. It is easiest to begin with inches and convert them to cubic yards. For example: Length = 112 inches Width = 94 inches Thickness = 4 inches [(length x width) x thickness] = (112 x 94) x 4 = 10,528 x 4 = 42,112 cubic inches

Divide the number of cubic inches by 1 cubic foot to find the number of cubic feet: 42,112 / 1,728 = 24.37 cubic feet

Divide 1 cubic yard into the number of cubic feet: 24.37 / 27 = .9026 cubic yards Call your local concrete supplier and order this amount of concrete for your project.
Writer Bio
Josh surprisingly found himself as an English Literature major one day after planning on becoming a doctor for most of his life. He graduated with a BS from Utah Valley University in April 2003.
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