mm to Inches - Millimeters to Inches Converter
Instantly convert Millimeters (mm) to Inches (in). Enter a value below to get the result, or use our reference table and formula for quick calculations.
Millimeters to Inches Formula
To convert mm to in, use this formula:
inches = mm × 0.0393701
Reverse Conversion
mm = inches × 25.4
mm to in Conversion Table
| Millimeters (mm) | Inches (in) |
|---|---|
| 1 | 0.0394 |
| 2 | 0.0787 |
| 5 | 0.1969 |
| 10 | 0.3937 |
| 25 | 0.9843 |
| 50 | 1.9685 |
| 100 | 3.9370 |
| 150 | 5.9055 |
| 200 | 7.8740 |
| 254 | 10.0000 |
Common Use Cases
🔧 Hardware & Fasteners — Bolt and screw sizes are often in mm (metric) or inches (US). Convert between the two for compatibility.
🖨️ Printing & Paper — Paper thickness and printer specs may use mm or inches. Convert for accurate settings.
📱 Electronics — Component dimensions are commonly in mm. Convert to inches for US documentation.
💎 Jewelry Making — Bead and wire sizes may be in mm. Convert to inches for US-based design patterns.
Frequently Asked Questions
1 millimeter = 0.0393701 inches.
10 × 0.0393701 = 0.3937 inches (about 3/8 inch).
25 mm = 0.9843 inches (essentially 1 inch).
Yes, exactly. 1 inch = 25.4 millimeters by international definition.
Divide mm by 25.4. For rough estimates, divide by 25.
Related Conversions
Need more conversions? Try our full Unit Converter tool with 50+ unit categories.