Convert Inch to Millimeter - Free Calculator
Fast, accurate length conversion calculator. Convert inch to millimeter instantly with precise results.
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How to Convert Inch to Millimeter
Use this free online calculator to convert Inch to Millimeter instantly. This length conversion tool provides accurate results for all your measurement needs.
Quick Reference
Inch to Millimeter Conversion Formula
To convert Inch to Millimeter, multiply by 25.4.
To convert Millimeter back to Inch, divide by 25.4 (or multiply by 0.0393701).
About These Units
About Inch
The inch is a traditional measurement of distance equal to 1/12 of a foot, or exactly 2.54 centimeters. The Old English word "ynce" is derived from the Latin uncia, meaning a 1/12 part. It follows that "inch" and "ounce" actually have the same origin. The inch was originally defined in England in two ways: as the length of three barleycorns laid end to end, or as the width of a man's thumb at the base of the nail.
About Millimeter
The millimeter (or millimetre) is one of the most common metric units of distance. One millimeter is exactly one thousandth of a meter. The millimeter is also an engineering standard unit.
Inch to Millimeter Conversion Table
| Inch | Millimeter | Millimeter | Inch |
|---|---|---|---|
| 0.1 | 2.54 | 0.1 | 0.00393701 |
| 0.5 | 12.7 | 0.5 | 0.019685 |
| 1 | 25.4 | 1 | 0.0393701 |
| 2 | 50.8 | 2 | 0.0787402 |
| 5 | 127 | 5 | 0.19685 |
| 10 | 254 | 10 | 0.393701 |
| 20 | 508 | 20 | 0.787402 |
| 25 | 635 | 25 | 0.984252 |
| 50 | 1,270 | 50 | 1.9685 |
| 100 | 2,540 | 100 | 3.93701 |
| 250 | 6,350 | 250 | 9.84252 |
| 500 | 12,700 | 500 | 19.685 |
| 1000 | 25,400 | 1000 | 39.3701 |
Why Use Our Inch to Millimeter Converter?
- Instant and accurate length conversions
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- Mobile-friendly design for conversions on the go
- Supports all major length units