How to Figure Cubic Yards for a Trailer

by Bryan Keythman

A cubic yard is a measure of volume, or how much matter can fit in a space, such as a trailer. A trailer's volume in cubic yards is the amount of something that can fit in the trailer, such as gravel, wood chips or dirt. A trailer's dimensions, such as height, length or volume, are often provided in feet. If you know only its linear dimensions, such as height and length, convert them into volume in cubic feet before converting into cubic yards. If you already know a trailer's volume in cubic feet, convert cubic feet into cubic yards.

Input the dimensions of a trailer that is rectangular in shape into the formula volume = length x width x height. For example, the formula for a trailer that's 28 feet long by 8 feet wide by 9 feet high is 28 feet x 8 feet x 9 feet.

Use the calculator to multiply 28 times 8 times 9, which equals 2,016 cubic feet.

Convert cubic feet into cubic yards by dividing by 27: 2,016 divided by 27 equals 74.7 cubic yards.


  • If a trailer is a shape other than a rectangle, determine the formula required to calculate its volume.

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