Millimeter to Inch Converter
Convert Millimeters to Inches
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How to Convert Millimeters to Inches
Converting millimeters (mm) to inches (in) involves converting from the metric system to the imperial system. One inch is equal to 25.4 millimeters.
Formula
Inches = Millimeters ÷ 25.4
or
in = mm ÷ 25.4
Step-by-step process
- Take the measurement in millimeters
- Divide that number by 25.4
- The result is the equivalent amount in inches
Examples
- 25.4 millimeters = 1 inch
- 50.8 millimeters = 2 inches
- 12.7 millimeters = 0.5 inches
When to Convert Millimeters to Inches
This conversion is useful when working with international standards, manufacturing, or any field requiring interoperability between metric and imperial measurements.
Common Millimeters to Inches Conversions
Here is a table of common millimeter to inch conversions for quick reference:
| Millimeters (mm) | Inches (in) | Millimeters (mm) | Inches (in) |
|---|---|---|---|
| 1 | 0.0393701 | 100 | 3.93701 |
| 2 | 0.0787402 | 200 | 7.87402 |
| 5 | 0.1968505 | 500 | 19.68505 |
| 10 | 0.393701 | 1,000 | 39.3701 |
Frequently Asked Questions
How many inches are in a millimeter?
There are approximately 0.0393701 inches in one millimeter.
Why is the conversion factor 25.4?
The inch is defined as exactly 25.4 millimeters. Therefore, to convert millimeters to inches, you divide by this value.