The Conversion Factor
* 1 inch (in) is equal to 25.4 millimeters (mm).
The Formula
To convert millimeters to inches, divide the number of millimeters by 25.4.
Example
Let's say you have a measurement of 100 millimeters. To convert this to inches:
1. Divide by the conversion factor: 100 mm / 25.4 mm/in = 3.937 in (approximately)
Therefore, 100 millimeters is equal to approximately 3.937 inches.
Using a Calculator
Most calculators have a "conversion" function or you can simply use the division function.
