An inch(in) is a unit of length in the imperial units and U.S customary systems of measurements.
While a centimeter(cm) is a metric unit of length, equal to one hundredth of a meter.
Formula to convert in to cm.
The relationship between inches and centimeters is that 1 inch is equivalent to 2.54 centimeters.
Therefore, if you want to convert inches to centimeters, we multiply the inches by 2.54.
Length in cm = Length in In x 2.54
Convert 20 Inches to centimeters.
= 20 x 2.54
= 50.8 centimeters.