When converted, 19 inches is equivalent to 48.26 centimeters. The formula for conversion is based upon the equivalency of 0.3937 inches to 1 centimeter. In the formula, the total number of inches is divided by 0.3937 to obtain the measurement in centimeters.
The centimeter is a unit of length in the metric system of measurement, a decimal system based around the meter as a measurement of length. Every meter contains 100 centimeters and 1000 millimeters. The inch is a unit of length in the imperial system of measurement that uses the foot as the basis for measurement. Every foot contains 12 inches. The inch is officially defined as being equal to 2.54 centimeters.