How to Determine How Many Yards of Concrete to Use
- 1). Determine the length of the space you want to fill with concrete in feet. For example, assume the length of the space is 15 feet.
- 2). Determine the width of the space you want to fill with concrete in feet. For example, assume the width of the space is 8 feet.
- 3). Determine the depth of the space you want to fill with concrete in feet. In other words, how thick of a slab of concrete do you want? For example, assume the depth of the space is 0.5 feet.
- 4). Multiply the length figure by the width figure by the depth figure. Continuing the same example, 15 x 8 x 0.5 = 60 square feet. This figure represents the volume of the space you want to fill with concrete.
- 5). Divide the volume figure from Step 4 by 27 to determine the cubic yards of concrete needed. Continuing the same example, 60 / 27 = 2.22 yards of concrete.
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