Unit Converter Pro allows you to add your custom categories You can add, modify or remove your custom categories in this dialog.
Custom Categories Dialog
(click on the area of your interest)
Displays the Add Custom Category dialog, where you can add a new custom category.
Fill in only a name of new category. You must choose a unique name.
Displays the Rename Custom Category dialog, where you can rename the selected category. This dialog is analogical as the Add Custom Category dialog.
Removes the selected custom category.
Displays the Custom units dialog, where you can manage units of the selected category.