Still NO. UM still on the online version

Hello there, zfayad.

Adding a unit measurement in QuickBooks Online is unavailable. Having this feature would be great. Let's send your feedback to our Product Development team. This will be given a chance to be evaluated. Gear icon> Feedback.
 

We can utilize a third-party application that helps you add UM. You can find the right apps on our website:
 

1. Go to this link: QuickBooks Apps.
2. You can select a specific category under the Categories section.
3. Then, make sure to review the key benefits and FAQs.
4. Once done, click the Get app now button.

Or, within your QBO account:

1. Go to the Apps menu.
2. Click the app so you can check more details.

I'm adding this article to further guide you in managing the growth of your business using QBO: QuickBooks Help Articles. It includes topics about account management, bank transactions, and vendors and inventory, to name a few. You can click the + More topics button to view other selections. 

If you have more concerns about QuickBooks, please don't hesitate to post them here. We always want to hear from you. Take care and have a good one.