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B&S Gauge Conversion Chart

Brown and Sharpe Gauge Conversion Chart

This chart is a crucial tool for jewelers wanting to accurately convert from inches or millimeters to the equivalent gauge when purchasing precious metal round wire or flat sheet.

We highly recommend that you print copies for your bench and your computer. This way you are always one glance away from knowing the gauge you want, whether you are hard at work on a piece of jewelry or placing an order on our website.

B&S Gauge Conversions
Gauge	Inch	mm
2	0.2576	6.544
3	0.2294	5.827
4	0.2043	5.189
5	0.1819	4.621
6	0.1620	4.115
7	0.1443	3.665
8	0.1285	3.264
9	0.1144	2.906
10	0.1019	2.588
11	0.0907	2.305
12	0.0808	2.053
13	0.0720	1.828
14	0.0641	1.628
15	0.0571	1.450
16	0.0508	1.291
17	0.0453	1.150
18	0.0403	1.024
19	0.0359	0.912
20	0.0320	0.812
21	0.0285	0.723
22	0.0253	0.644
23	0.0226	0.573
24	0.0201	0.511
25	0.0179	0.455
26	0.0159	0.405
27	0.0142	0.361
28	0.0126	0.321
29	0.0113	0.286
30	0.0100	0.255
31	0.0089	0.227
32	0.0080	0.202