How can I switch the units for the sizes in the store (imperial/metric)?
The sizes of items in the store can be presented in either the Imperial System (inches) or the Metric System (centimeters). For newly registered accounts, the default settings will be set according to the country listed on the account.
When switching from inches to centimeters, the prints will be offered in new, standard sizes in centimeters (so sizes can be presented in whole, round numbers) and the sizes in inches will be omitted from the store. All other items will have the exact units from inches converted to centimeters (i.e. 8 inches = 20.3 centimeters) .
Adjusting Store Settings
Click Settings from the main dashboard.
Under the Store Pricing tab, click Units.
Select Inches or Centimeters from the drop-down list.