I want to change the langouage to french please how can I do it ?

Hello haroutkaram-gmai,

Welcome to Community!  QuickBooks Online has the flexibility you need, to personalize your company preferences.  I would be glad to assist!

Here's how to edit the language;

1. Open your Settings ⚙ , then Account and settings

2. Select the Advanced tab, then scroll down to the Language section

3. Click the Edit 📝, and then choose the desired language from the drop-down menu

4. Hit Save, then Done 

In addition, QuickBooks Online provides multilingual invoicing.  You can set a default language to your customers, so when an invoice is sent, QuickBooks will automatically translate it to the preferred language. 

If you have any other questions, please don't hesitate to reach back out.  We would be happy to help!