Yes. You can weigh in either grams or ounces for our scales.
To change units:
1) The scale can be switched between the two units via a long press of the T button while in weighing mode (without timer).
2) You can also connect the scale to one our apps and switch it in the Settings menu.
Based on feedback we've received, the lunar can be switched between grams and ounces only via the app or the scale's setup menu.
You'll know that the scale is in ounces when the display changes from 0.0 to 0.000 and has a green light on the right side. See below photo.