Sheet Gauges Chart

Easily convert gauge numbers to inches or millimeters with our sheet gauge chart. Learn how to read the chart to identify sheet thickness by gauge and choose the right material for your needs.

Gauge	Mild Steel	Aluminum	Galvanized Steel	Stainless Steel
3	0.2391	0.2294	-	0.25
4	0.2242	0.2043	-	0.2344
5	0.2092	0.1819	-	0.2187
6	0.1943	0.162	-	0.2031
7	0.1793	0.1443	-	0.1875
8	0.1644	0.1285	0.168	0.1719
9	0.1495	0.1144	0.1532	0.1562
10	0.1345	0.1019	0.1382	0.1406
11	0.1196	0.0907	0.1233	0.125
12	0.1046	0.0808	0.1084	0.1094
13	0.0897	0.072	0.0934	0.0937
14	0.0747	0.0641	0.0785	0.0781
15	0.0673	0.0571	0.071	0.0703
16	0.0598	0.0508	0.0635	0.0625
17	0.0538	0.0453	0.0575	0.0562
18	0.0478	0.0403	0.0516	0.05
19	0.0418	0.0359	0.0456	0.0437
20	0.0359	0.032	0.0396	0.0375
21	0.0329	0.0285	0.0366	0.0344
22	0.0299	0.0253	0.0336	0.0312
23	0.0269	0.0226	0.0306	0.0281
24	0.0239	0.0201	0.0276	0.025
25	0.0209	0.0179	0.0247	0.0219
26	0.0179	0.0159	0.0217	0.0187
27	0.0164	0.0142	0.0202	0.0172
28	0.0149	0.0126	0.0187	0.0156
29	0.0135	0.0113	0.0172	0.0141
30	0.012	0.01	0.0157	0.0125
31	0.0105	0.0089	0.0142	0.0109
32	0.0097	0.008	0.0134	0.0102
33	0.009	0.0071	-	0.0094
34	0.0082	0.0063	-	0.0086
35	0.0075	0.0056	-	0.0078
36	0.0067	-	-	0.007

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