Millimeters to Inches Converter
Type a value in millimeters to get inches. You can also type in the inches box to convert the other way.
mm
in
1 mm = 0.039370079 in
Convert inches to mmHow to convert millimeters to inches
The formula:
in = mm ÷ 25.4
Example: 10 mm ÷ 25.4 = 0.393701 in
Machinists often work in thou (thousandths of an inch): 1 mm is about 39.37 thou.
Millimeters to Inches conversion chart
| Millimeters | Inches |
|---|---|
| 1 mm | 0.0393701 in |
| 2 mm | 0.0787402 in |
| 3 mm | 0.11811 in |
| 5 mm | 0.19685 in |
| 6 mm | 0.23622 in |
| 8 mm | 0.314961 in |
| 10 mm | 0.393701 in |
| 12 mm | 0.472441 in |
| 16 mm | 0.629921 in |
| 20 mm | 0.787402 in |
| 25 mm | 0.984252 in |
| 50 mm | 1.9685 in |
What is a millimeter?
One thousandth of a meter. The standard unit on engineering drawings, CNC machines and sheet metal.
What is an inch?
Exactly 2.54 centimeters, fixed by international agreement in 1959. Pipe, bolt and screen sizes are given in inches.
Frequently asked questions
What is 1 mm in inches?
1 mm is 0.03937008 in.
How do I convert millimeters to inches?
Divide the value in millimeters by 25.4. For example, 10 mm ÷ 25.4 = 0.393701 in.
What is 10 mm in inches?
10 mm is 0.393701 in.