There are 27 cubic feet in a cubic yard. The formula for a cubic foot is length x width x depth. The cubic foot is a 3-dimensional measurement of a linear formula of volume.
According to the Annenberg Learner Interactive, the metric system is the internationally agreed upon decimal system of measurement. The metric system allows people to understand the measurement regardless of what language they speak. A cubic foot in Britain is the same as a cubic foot in China. As of 2014, Burma, Liberia and the United States are the only countries still using the imperial measurement system. The Metric System is used within industrial standards in the United States.