Length converter
Convert Millimeters to Inches (mm to in)
1 mm = 0.03937 in. Reading metric drawings on imperial machines and gauging stock.
Millimeters to inches conversion table
| mm | in |
|---|---|
| 1 mm | 0.03937 in |
| 5 mm | 0.19685 in |
| 10 mm | 0.393701 in |
| 25 mm | 0.984252 in |
| 50 mm | 1.9685 in |
| 100 mm | 3.937 in |
| 250 mm | 9.8425 in |
How to convert millimeters to inches
Multiply the value in millimeters by 0.03937 to get inches. 1 mm equals 0.03937 in, and 1 in equals 25.4 mm.
About these units
The millimeter is one thousandth of a meter and the default dimension unit on metric engineering drawings. Machined tolerances are commonly quoted in hundredths of a millimeter.
The inch is the base dimension unit on US engineering drawings, defined exactly as 25.4 millimeters. Shop tolerances are usually expressed in decimal inches rather than fractions.
Common questions
How many inches are in a millimeter?
1 mm equals 0.03937 in.
How do you convert millimeters to inches?
Multiply the value in millimeters by 0.03937 to get inches. 1 mm equals 0.03937 in, and 1 in equals 25.4 mm.