PCB Copper Thickness

The copper in a PCB is rated in ounces, and represents the thickness of 1 ounce of copper rolled out to an area of 1 square foot. For example a PCB that uses 1 oz. copper has a thickness of 1.4mils.

1/2 oz.	0.7 mils
1 oz.	1.4 mils
2 oz.	2.8 mils