CONVERT INCH TO MILLIMETER
Please provide values below to convert inch [in] to millimeter [mm], or vice versa.
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Inch
Definition: An inch (symbol: in) is a unit of length in the imperial and US customary systems of measurement. An inch is defined as exactly 25.4 millimeters.
History/Origin
The inch has a long history dating back to ancient civilizations. The modern inch was standardized in 1959 when the international yard was defined, establishing the inch as exactly 25.4 millimeters.
Current Use
The inch remains widely used in the United States, Canada, and the United Kingdom for everyday measurements, particularly in construction, manufacturing, and consumer products.
Millimeter
Definition: A millimeter (symbol: mm) is a unit of length in the International System of Units (SI). It is defined as one thousandth of a meter (1/1000 m).
History/Origin
The millimeter is derived from the meter, with the prefix "milli" denoting one thousandth. It has been part of the metric system since its development, providing a practical unit for small-scale precision measurements.
Current Use
The millimeter is commonly used for precise measurements in engineering, manufacturing, and technical applications worldwide. It's the standard unit for measuring small objects, thicknesses, and precision parts.
Inch to Millimeter Conversion Table
| Inch [in] | Millimeter [mm] |
|---|---|
| 0.01 in | 0.254 mm |
| 0.1 in | 2.54 mm |
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 3 in | 76.2 mm |
| 5 in | 127 mm |
| 10 in | 254 mm |
| 20 in | 508 mm |
| 50 in | 1270 mm |
| 100 in | 2540 mm |
| 1000 in | 25400 mm |
How to Convert Inch to Millimeter
1 in = 25.4 mm
1 mm = 0.0393700787 in
Example: Convert 5 inches to millimeters
5 in = 5 × 25.4 mm = 127 mm
To convert inches to millimeters, multiply the inch value by 25.4. This conversion factor is exact by definition, making inch-to-millimeter conversions highly accurate and commonly used in engineering and manufacturing.