Decimal/Wire Gauge/Metric Equivalents

In order to get a welding or industrial job done right, you need the right tools and the correct sizes to avoid delay and costs. This wire gauge chart was created to provide you with a reference between Standard Wire Gauge (SWG), imperial measurements, and millimeters in order to help you determine wire thickness.

To make different wire sizes for specific uses, like fence wire for example, a single strand must been “drawn” or thinned out to meet the specific gauge diameter. Drawing a wire 1 time, is minimal, that’s why as the gauge numbers get bigger, the thickness of the wire decreases and the wire becomes thinner. If you’re looking for more specialized welding information, we have additional technical specifications and charts for MIG & TIG welding, oxyfuel cutting and stick welding available.

Miscellaneous Welding Decimal/Wire Gauge/Metric Equivalents
Inch
(Fract.)
SWG
Size
Decimal
(Thousandths)
Millimeters
1/64 25 and 23 .0156 0,5 – 0,6
1/32 22 and 21 .0312 0,7 – 0,8
3/64 18 .0468 1 – 1,2
1/16 16 .0625 1,5 – 1,6
5/64 14 .0781 2
3/32 12 .0937 2,4 – 2,5
1/8 10 .1250 3 – 3,2 – 3,25
5/32 8 .1562 4
3/16 6 .1875 4,8 – 5
1/4 4 .2500 6
17/64 2 .2656 6 – 8
5/16 0 .3125 8
25/64 4/0 .3906 10
15/32 6/0 .4687 12
19/32 .5937 15

If you have any questions about metric equivalents, contact us at 888-243-9353 or get a quote online today. You could also visit us at any of our locations in Central and Southern Illinois and one of our experts will help you find exactly what you’re looking for.