EXACT CONVERSION FORMULA
Inches (in) = Millimeters (mm) รท 25.4
1 inch is defined as exactly 25.4 millimeters. Divide mm by 25.4 to get inches.
Millimeters to Inches Conversion Table
Quick reference lookup table for converting common values from millimeters to inches:
| Millimeters (mm) | Inches (in) |
|---|---|
| 1 mm | 0.03937007874 in |
| 2 mm | 0.07874015748 in |
| 3 mm | 0.1181102362 in |
| 5 mm | 0.1968503937 in |
| 6 mm | 0.2362204724 in |
| 8 mm | 0.3149606299 in |
| 10 mm | 0.3937007874 in |
| 12 mm | 0.4724409449 in |
| 15 mm | 0.5905511811 in |
| 20 mm | 0.7874015748 in |
| 25 mm | 0.9842519685 in |
| 30 mm | 1.181102362 in |
| 50 mm | 1.968503937 in |
| 100 mm | 3.937007874 in |
Practical Examples
10 mm = 0.3937 in
Common bolt diameter
25.4 mm = 1.0 in
Exact 1 inch equivalent
50 mm = 1.9685 in
Camera lens diameter
Frequently Asked Questions
How many inches is 10mm?
10 millimeters is approximately 0.3937 inches.
How do I convert mm to inches?
Divide the millimeter value by 25.4 to get inches.