Using the conversion factor 304.8 millimeters equals 1 foot allows one to convert millimeters to feet. For instance, to find the number of feet in 762 millimeters, divide 762 millimeters by 304.8 millimeters per foot. The result is 2.5 feet.
One inch equals 2.54 centimeters, and 1 foot equals 12 inches. To find the number of centimeters in 1 foot, multiply 12 by 2.54 for a total of 30.48 centimeters. Since 10 millimeters equals 1 centimeter, 30.48 centimeters equals 304.8 millimeters.
Millimeters, centimeters and meters are units of length in the metric system, a system of measurement based on units of 10. Inches and feet are customary units of length in the imperial system of measurement, used primarily in the United States.