Wire Gauge Conversions To Millimeters and Inches

Getting the right size wire is vital when buying supplies for your jewellery making projects - you want to be sure that the wire is the perfect size for your design! As with many measurements, our friends in America have a different system for measuring and when it comes to wire they use 'gauge'.

Sometimes, when following projects from the internet or books, this measurement is used. We have created this handy wire gauge conversion chart showing the AWG (American Wire Gauge) sizes and their equivalents in both inches and millimeters.

Below this chart is an example of the different metal wires we provide which come in a wide range of measurements from 0.2mm to 4mm.

Gauge (AWG)InchesMillimetres
100.102 2.59
110.091 2.31
120.081 2.06
130.072 1.83
140.064 1.63
150.057 1.45
160.052 1.32
170.045 1.14
180.04 1.02
190.036 0.91
200.032 0.81
210.028 0.71
220.025 0.64
230.023 0.58
240.02 0.51
250.0179 0.455
260.0159 0.404
270.0142 0.361
280.0126 0.32
290.0113 0.287
300.01 0.25
310.0089 0.226
320.008 0.2
330.0071 0.18
340.0063 0.16
35 0.0056 0.142
360.005 0.13
370.0045 0.114
380.004 0.1

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Shop Metal Wire

At Kernowcraft, we stock a wide range of metal wire for your jewellery making needs.

Metals include plated, sterling silver, eco-friendly, 9ct gold, copper and brass. We also have a various shaped wire available such as D-shaped wire, square & rectangular wire, beaded wire, twisted wire, gallery wire and bezel strip.

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Whether you want to learn the basic of jewellery making, wire wrapping skills or stone setting - we have plenty of free tutorials and guides to help you


If you have any questions, feel free to get in touch with our friendly team who will be more than happy to give you advice over email or on the phone.

You can learn more and find inspiration by visiting our Jewellery Making Tutorials, Jewellery Making Kits and YouTube Channel. Don't forget to follow us on social media and tag us in your designs on Instagram & Facebook, we would love to see!

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