Metal Thickness Chart

Conventional Gauge	Inches	Metric
24	.020 - .026"	0.5 - 0.6 mm
22	.027 - .032"	0.7 - 0.8 mm
20	.033 - .037"	0.8 - 0.9 mm
19	.038 - .042"	0.9 - 1.1 mm
18	.043 - .048"	1.1 - 1.2 mm
16	.053 - .059"	1.3 - 1.5 mm
12	.094 -.106"	2.4 - 2.7 mm