1 inch is 25.4 millimeters
1 millimeter is 0.0393700787402 inches
As nouns the difference between inch and millimeter
is that
inch is a unit of length equal to one twelfth of a foot, or exactly 254 centimetres or
inch can be (scotland) a small island while
millimeter is millimetre (
uk), millimeter (
us).
As a verb inch
is (followed by a preposition) to advance very slowly, or by a small amount (in a particular direction).