Our MM to Inches Converter is a fast, accurate tool that helps you instantly convert millimeters to inches. Whether you need decimal, fraction, or feet+inches format, our free converter delivers precise results in seconds.
MM to Inches Converter
Precision Conversion. Every Time. — Decimal, fractional and feet+inches results instantly.
Millimeters to Inches Conversion Table
Click any row to visit its dedicated conversion page with detailed information.
| Millimeters (mm) | Inches (decimal) | Inches (fraction) |
|---|---|---|
| 0.5 mm | 0.0197″ | 1/64″ |
| 1 mm | 0.0394″ | 3/64″ |
| 2 mm | 0.0787″ | 5/64″ |
| 3 mm | 0.1181″ | 1/8″ |
| 4 mm | 0.1575″ | 5/32″ |
| 5 mm | 0.1969″ | 13/64″ |
| 6 mm | 0.2362″ | 15/64″ |
| 7 mm | 0.2756″ | 9/32″ |
| 8 mm | 0.3150″ | 5/16″ |
| 9 mm | 0.3543″ | 23/64″ |
| 10 mm | 0.3937″ | 25/64″ |
| 15 mm | 0.5906″ | 19/32″ |
| 20 mm | 0.7874″ | 25/32″ |
| 25 mm | 0.9843″ | 63/64″ |
| 30 mm | 1.1811″ | 1 3/16″ |
| 40 mm | 1.5748″ | 1 37/64″ |
| 50 mm | 1.9685″ | 1 31/32″ |
| 60 mm | 2.3622″ | 2 23/64″ |
| 70 mm | 2.7559″ | 2 3/4″ |
| 80 mm | 3.1496″ | 3 5/32″ |
| 90 mm | 3.5433″ | 3 35/64″ |
| 100 mm | 3.9370″ | 3 15/16″ |
| 150 mm | 5.9055″ | 5 29/32″ |
| 200 mm | 7.8740″ | 7 7/8″ |
| 250 mm | 9.8425″ | 9 27/32″ |
| 300 mm | 11.8110″ | 11 13/16″ |
How to Convert MM to Inches
To convert millimeters to inches, divide the millimeter value by 25.4. This is because one inch equals exactly 25.4 millimeters — a definition standardized internationally in 1959.
Formula: Inches = Millimeters ÷ 25.4
Example
Convert 25 mm to inches: 25 ÷ 25.4 = 0.9843 inches (approximately 1 inch)
Why Convert?
Converting mm to inches is essential for woodworking, engineering, manufacturing, hardware, and any project working with materials from countries using different measurement systems.
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