Millimeters to Inches
1 Millimeter = 0.03937 Inches
Common amounts:
About the millimeter to inch conversion
The millimeter (mm) and the inch (in) are both units of length. Convert between metric and imperial length units — millimeters, meters, kilometers, inches, feet, yards, miles and nautical miles.
To convert millimeters to inches, multiply by 0.03937. To go back, multiply inches by 25.4.
Reference table
| Millimeters | Inches |
|---|---|
| 1 mm | 0.03937 in |
| 5 mm | 0.19685 in |
| 10 mm | 0.3937 in |
| 25 mm | 0.98425 in |
| 50 mm | 1.9685 in |
| 100 mm | 3.937 in |
Need the reverse conversion? Convert Inches to Millimeters.
Convert Millimeter to other length units
Frequently asked questions
- How many inches is 1 millimeter?
- 1 Millimeter equals 0.03937 Inches. To go the other way, 1 Inch equals 25.4 Millimeters.
- What's the formula to convert millimeters to inches?
- Multiply the number of millimeters by 0.03937 to get inches. For example, 10 millimeters × 0.03937 = 0.3937 inches.
- Does this converter handle decimals and very large numbers?
- Yes. Type any real number, including decimals or values in the trillions. Math runs entirely in your browser — no server round-trip, no sign-up, and nothing to install.