1
Engineering & Machining
In machining and engineering, precise measurements are critical. Converting inches to millimeters is a standard requirement for international projects.
Convert Inches to Mm
Inches to Millimeters
Convert inches to millimeters for precise measurements in engineering, manufacturing, and crafts.
How many Millimeters in a Inch
One inch is equal to 25.4 millimeters:
1in = 25.4 × 1 = 25.4mm
Common Inch Fraction to mm Conversions
| Inch (Fraction) | Millimeters (mm) |
|---|---|
| 1/2" | 12.7000 mm |
| 1/3" | 8.4667 mm |
| 1/4" | 6.3500 mm |
| 1/5" | 5.0800 mm |
| 1/6" | 4.2333 mm |
| 1/8" | 3.1750 mm |
| 1/16" | 1.5875 mm |
| 2/3" | 16.9333 mm |
| 2/5" | 10.1600 mm |
| 3/5" | 15.2400 mm |
| 4/5" | 20.3200 mm |
| 5/6" | 21.1667 mm |
| 3/8" | 9.5250 mm |
| 5/8" | 15.8750 mm |
| 7/8" | 22.2250 mm |
| 3/16" | 4.7625 mm |
| 5/16" | 7.9375 mm |
| 7/16" | 11.1125 mm |
| 9/16" | 14.2875 mm |
| 11/16" | 17.4625 mm |
| 13/16" | 20.6375 mm |
| 15/16" | 23.8125 mm |
Inches to Millimeters Conversion Table
Common Use Cases for Inches to Millimeters Conversion
Discover practical applications and real-world scenarios where converting in to mm is essential for accuracy and efficiency.
Why This Conversion Matters:
Converting in to mm ensures accuracy, compliance with standards, and seamless communication across different measurement systems.
2
Woodworking & Crafts
Many plans and tools use imperial units. This converter helps you easily switch to metric for more precise cuts and measurements.
3
3D Printing
Filament diameters and print specifications are often in millimeters. Convert your inch-based designs to metric for accurate 3D printing.
Need More Conversion Tools?
Explore our comprehensive collection of unit converters for all your measurement needs.