Convert Millimeters (mm) to Inches (in)
Enter a value below to convert Millimeters (mm) to Inches (in).
Conversion:
1 Millimeters (mm) = 0.03937007874 Inches (in)
How to Convert Millimeters (mm) to Inches (in)
1 mm = 0.03937007874 in
1 in = 25.4 mm
Example: convert 15 Millimeters (mm) to Inches (in):
25 mm = 0.9842519685 in
Millimeters (mm) to Inches (in) Conversion Table
| Millimeters (mm) | Inches (in) |
|---|---|
| 0.01 mm | 0.0003937007874 in |
| 0.1 mm | 0.003937007874 in |
| 1 mm | 0.03937007874 in |
| 2 mm | 0.07874015748 in |
| 3 mm | 0.11811023622 in |
| 5 mm | 0.1968503937 in |
| 10 mm | 0.3937007874 in |
| 20 mm | 0.7874015748 in |
| 50 mm | 1.968503937 in |
| 100 mm | 3.937007874 in |
| 1000 mm | 39.37007874 in |
Millimeters (mm)
Definition
A millimeter (mm) is a metric unit of length equal to one thousandth of a meter (0.001 m). There are 10 millimeters in a centimeter.
History
The millimeter derives from the metric system established in France in 1795. It became widely used in engineering and manufacturing as precision requirements increased during the Industrial Revolution.
Current use
Millimeters are standard in engineering drawings, precision machining, medical measurements (tumor sizes), rainfall measurement, and small-scale construction specifications worldwide.
Inches (in)
Definition
An inch (in) is an imperial unit of length equal to 1/12 of a foot or exactly 25.4 millimeters.
History
The inch has ancient origins, historically defined as the width of a man's thumb. It was standardized internationally in 1959 to exactly 25.4 mm. The word 'inch' derives from the Latin 'uncia' meaning one-twelfth.
Current use
Inches are widely used in the United States, Canada, and the United Kingdom for everyday measurements: screen sizes, paper dimensions, height measurements, pipe diameters, and construction specifications.