Millimeters, or "mm" for short, and inches, or "in" for short, measure short distances. The metric system uses millimeters and the American system uses inches. Each inch equals 25.4 millimeters. You might need to convert millimeters to inches if you have a ruler that only measures millimeters but want to report the measurement in inches. When you want to report the answer in decimal inches, simply keep the decimal when you multiply or divide by the appropriate conversion factor.
Instructions
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1
Multiply the number of mm by 0.03937 to convert to inches. For example, if you have 60 mm, multiply 60 by 0.03937 to get 2.36 in.
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2
Divide the number of mm by 25.4 to convert to inches. In this example, verify your conversion by dividing 60 by 25.4 to get 2.36 in.
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Verify your answer with an online mm-to-in converter like the one listed in the Resources section below. Enter the number of millimeters and press "Go."