How do you say be right back in french?

The most common way to say "be right back" in French is "Je reviens tout de suite".

Here's a breakdown of the phrase:

* Je - I

* reviens - come back (present tense of revenir)

* tout de suite - immediately, right away

You can also use these variations:

* Je reviens dans un instant (I'll be back in a moment)

* Je suis de retour dans un instant (I'm back in a moment)

* Je reviens tout à l'heure (I'll be back soon)

The choice of phrase depends on how long you expect to be gone.