I'd like to share some informaiton about the language in Quickbooks Online (QBO).
The default language in QBO is English for all countries except for the following (available in Account and Settings):
Hong Kong: English and Traditional Chinese offered
Mexico: Spanish offered
France: English and French offered
Brazil: English and Brazilian Portuguese
Canada: English and French offered
In the meantime, as a workaround, you can consider using the Google Translate plug-in in Google Chrome. In Google Translate, you can select from multiple languages to translate the QuickBooks Online interface.
Follow these steps to install the Google Translate plug-in:
With your Google Chrome browser open, select Chrome, then Preferences.
Select Advanced, and under Languages, select Offer to translate pages that aren't in a language you read.
Close the setting tab and sign in to your QuickBooks Online account.
Right-click on the homepage, and then select Translate to English.
You will see a pop-up under the Google Translate icon appear at the end of the address bar; select the icon.
On the pop-up Translate this page, select Options, and then Change languages.
In the Translation Language drop-down, select the language you want to translate QuickBooks to, select Always translate, and then Done.
If you have any other questions, please let me know. I'll be happy to lend a hand.