There is no universal definition for length, but it is usually measured in meters or feet. However, length is considered a property of 3-dimensional objects which is defined as the distance from one point to another on an object.
Feet and meters are units of length. Feet are used for measuring length in the United Kingdom, the United States, and Canada, while meters are used in most other countries and parts of the world.
One foot equals 12 inches and one meter equals 39.37 inches or 3.28 feet.