MM ↔ Inches Converter
Convert millimeters to inches or inches to millimeters instantly. Free, accurate length converter.
Common Conversions
| mm | inches |
|---|---|
| 1 mm | 0.0394 in |
| 10 mm | 0.3937 in |
| 25.4 mm | 1 in (exact) |
| 100 mm | 3.937 in |
| 304.8 mm | 12 in (1 ft) |
How to Convert Millimeters to Inches
One inch is exactly 25.4 millimeters. To convert mm to inches, divide by 25.4.
Formula: inches = mm ÷ 25.4
To convert inches to mm, multiply by 25.4.
Formula: mm = inches × 25.4