A really fundamental parameter for PCB design is the copper weight to be used and the thickness of that copper. This post simply calls out these parameters for PCB designers who may need these constantly.

The thickness of 1 oz copper is 1.37 mils or 0.0347 mm
To determine the thickness of ( for example) 4 oz simply mutiply 1.37 mils by 4.0 ( or 0.0347 mm by 4.0). In terms of microns the thickness of 1 oz copper is 34.79 microns. 

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