Your Public Profile and Artwork Archive Reports show measurements in your default measurement setting found in your account settings.
If you wish to change that and display both, you can follow these steps:
For Public Profile
Click My Profile on the left menu.
Navigate to Public Settings on the top bar and check the box for “Show size in both centimeters and inches”
When creating a report, you will notice a Size Display Options Section.
This is where you can set your preferences for the report and where you can choose to include your default measurement setting or both cm and inches.