Converting Millimeters and Inches
Millimeters and inches are commonly used for precise measurements in engineering, manufacturing, and general hardware sizing (such as bolts, screws, and tools). The United States primarily uses the Imperial system (inches), while the rest of the world uses the Metric system (millimeters). Our Mm to Inches Converter bridges the gap between these two systems instantly.
The Conversion Formulas
The exact conversion factor between an inch and a millimeter is legally defined as exactly 25.4 millimeters per inch.
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Millimeters to Inches:
Inches = mm ÷ 25.4 -
Inches to Millimeters:
mm = Inches × 25.4
Common Length Conversions
Here is a quick reference table for common metric to imperial conversions used in hardware and drafting:
| Millimeters (mm) | Inches (in) |
|---|---|
| 1 mm | 0.03937 in |
| 5 mm | 0.19685 in |
| 10 mm (1 cm) | 0.39370 in |
| 25.4 mm | 1 inch |
| 50.8 mm | 2 inches |