Is it possible to set a different frontend- and backend-language?

my WordPress site is currently set to “English”. I like the back-end to be completely in English, so it is easier to follow tutorial instructions etc. However, the front-end must be in German due to different reasons.

For instance, in need to have lang="de-DE" in the HTML-header for some plugin to work correctly.

Is there a way to achieve this?

Solutions Collecting From Web of "Is it possible to set a different frontend- and backend-language?"

You can set the site language to whatever you wish in the Settings > General > Site Language.

After that, you can head over to your profile and choose a language for the back-end. To do so, head over to Users > Your Profile > Language and change it to English.

However, there is an issue with Admin-Ajax requests. If you set the back-end language to English, the Ajax requests will be in English too.