How Do I Change 1.5 Mm Into Thousandths Of An Inch?

To solve this problem, divide by the number of millimeters in an inch to get the fraction of an inch expressed as a decimal.

One inch is 2.54 centimeters, or 25.4 millimeters.

If you divide 1.5 by 25.4, the result is 0.059, or 59 thousandths of an inch.