Millimeters to Inches Converter
How to convert millimeters to inches
inches = millimeters ÷ 25.4
To convert millimeters to inches, divide the number of millimeters by 25.4.
1 mm = 0.0393700787 in
Examples
- One inch: 25.4 mm ÷ 25.4 = 1 in
- The width of 35 mm film: 35 mm ÷ 25.4 = 1.37795276 in
Good to know
One inch is exactly 25.4 millimeters. Fractional inch sizes convert cleanly: 1/4 inch is 6.35 mm and 1/2 inch is 12.7 mm.
Millimeters to inches conversion table
| Millimeters (mm) | Inches (in) |
|---|---|
| 1 mm | 0.0393700787 in |
| 2 mm | 0.0787401575 in |
| 3 mm | 0.118110236 in |
| 4 mm | 0.157480315 in |
| 5 mm | 0.196850394 in |
| 6 mm | 0.236220472 in |
| 7 mm | 0.275590551 in |
| 8 mm | 0.31496063 in |
| 9 mm | 0.354330709 in |
| 10 mm | 0.393700787 in |
| 15 mm | 0.590551181 in |
| 20 mm | 0.787401575 in |
| 25 mm | 0.984251969 in |
| 50 mm | 1.96850394 in |
| 75 mm | 2.95275591 in |
| 100 mm | 3.93700787 in |
| 500 mm | 19.6850394 in |
| 1,000 mm | 39.3700787 in |
Unit definitions
- Millimeter (mm)
- A millimeter is one thousandth of a meter. It is the usual unit for engineering drawings, hardware sizes and rainfall.
- Inch (in)
- An inch is exactly 2.54 centimeters, one twelfth of a foot. It is used in the United States for everyday measurements and worldwide for screen sizes.