A foot is a unit of length equal to exactly 12 inches or 0.3048 meters.

A meter, or metre, is the fundamental unit of length in the metric system, from which all other length units are based. It is equal to 100 centimeters, 1/1000th of a kilometer, or about 39.37 inches.

An inch is a unit of length equal to exactly 2.54 centimeters. There are 12 inches in a foot, and 36 inches in a yard.

A centimeters, or centimetre, is a unit of length equal to one hundredth of a meter. There are 2.54 centimeters in an inch.

A yard is a unit of length equal to 3 feet or exactly 0.9144 meters.

A kilometer, or kilometre, is a unit of length equal to 1,000 meters, or about 0.621 miles. In most of the world, it is the most common unit for measuring distance between places.

A mile is a unit of distance equal to 5,280 feet or exactly 1.609344 kilometers. It is commonly used to measure the distance between places in the United States and United Kingdom.