Reference Designer Tables

Copper oz to mils Table

The PCB Designers specify the copper plating weight in oz. 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. This Tables converts Cu Oz to mils.

Following is the formula for oz to mils conversion.

Thickness(cpw) in mils = 1.37 * cpw (in oz)

Following is the formula thickness ( in mils) to cpw( in oz) conversion.

cpw(t) in oz = t (in mils)/1.37

Thickness in oz in Mils
1/2 0.7
If you want a calculator instead of table you can check here