The inch is equivalent to 25.40 mm and is mainly used in countries like the UK and the USA for various measurements. To convert any measurement, simply multiply by 2.54 (to obtain centimeters) or by 25.4 (to obtain millimeters).
Do you often come across measurements in inches on your wires or cables and don't know what they correspond to in millimeters? This guide explains it all, and the conversion table will help you with every order!
The inch is a unit of length that dates back to the Middle Ages and corresponded to the length of one inch. Although this value system has been abandoned in many countries.
Today, the inch is still used in several Anglo-Saxon countries, including :
It's a measurement used for the diameter of wires, such as metal wires and cabled wires, notably by American brands such as Soft Flex, Beadalon or Artistic Wire, the dimensions of screens, the resolution of printers or the sizes of certain garments such as jeans. It is indicated by the abbreviation '' (double prime) or by the two letters in. You may also have seen it written inches, which is simply the plural of inch.
The formula is simple:
To convert any measurement, simply multiply by 2.54 (to obtain centimetres) or by 25.4 (to obtain millimetres).
Example: a wire of 0.019 inch × 25.4 = 0.48 mm
| INCH (inch) | CM | MM |
| 1 | 2.54 | 25.40 |
| 2 | 5.08 | 50.80 |
| 3 | 7.62 | 76.20 |
| 4 | 10.16 | 101.60 |
| 5 | 12.7 | 127 |
| 6 | 15.24 | 152.40 |
| 7 | 17.78 | 177.80 |
| 8 | 20.32 | 203.20 |
| 9 | 22.86 | 228.60 |
| 10 | 25.4 | 254 |
| 11 | 27.94 | 279.40 |
| 12 | 30.48 | 304.80 |
| 36 | 91.44 | 914.40 |
| 1/4 | 0.635 | 6.35 |
| 1/2 | 1.27 | 12.70 |
| 3/4 | 1.905 | 19.05 |
| 1/8 | 0.3175 | 3.175 |
| 3/8 | 0.9525 | 9.525 |
| 5/8 | 1.5875 | 15.875 |
| 7/8 | 2.2225 | 22.225 |
| 1/16 | 0.15875 | 1.5875 |
| 3/16 | 0.47625 | 4.7625 |
| 5/16 | 0.79375 | 7.9375 |
| 7/16 | 1.11125 | 11.1125 |
| 9/16 | 1.42875 | 14.2875 |
| 11/16 | 1.74625 | 17.4625 |
| 13/16 | 2.06375 | 20.6375 |
| 15/16 | 2.38125 | 23.8125 |
| 1/32 | 0.079375 | 0.79375 |
| 3/32 | 0.238125 | 2.38125 |
| 5/32 | 0.396875 | 3.96875 |
| 7/32 | 0.555625 | 5.55625 |
| 11/32 | 0.714375 | 7.14375 |
| 13/32 | 0.873125 | 8.73125 |
| 15/32 | 1.031875 | 10.31875 |
| 17/32 | 1.349375 | 13.49375 |
| 19/32 | 1.508125 | 15.08125 |
| 21/32 | 1.666875 | 16.66875 |
| 23/32 | 1.825625 | 18.25625 |
| 25/32 | 1.984375 | 19.84375 |
| 27/32 | 2.143125 | 21.43125 |
| 29/32 | 2.301875 | 23.01875 |
| 31/32 | 2.460625 | 24.60625 |
Concrete examples with our wires
To better understand how to use this chart in your creations, here are a few matches taken directly from our catalog:
If you work with American wires, you'll often come across these two units side by side:
Both can be converted to millimeters: see also our gauge to mm conversion chart for easy navigation between the two systems.
And if you're wondering how to choose the right wire diameter for your project, our guide to choosing the right wire diameter will help you make even more sense of it.
An inch corresponds exactly to 25.40 mm, or 2.54 cm. It's an Anglo-Saxon unit of measurement still widely used in the United States and the United Kingdom to express the diameter of wires, among other things.
Simply multiply the value in inches by 25.4 to obtain millimeters. For example: 0.025 inch × 25.4 = 0.635 mm. Our table above makes this calculation for the most common jewelry values.
These two units measure the same thing (the diameter of a wire), but in different ways. Inch expresses the measurement directly in decimal inches, while AWG uses an inverted scale (the larger the number, the thinner the wire). Both convert to millimeters.
Credits
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