How do you say great day it in french?

There are a few ways to say "Have a great day" in French, depending on the context and level of formality:

Formal:

* Bonne journée! (This is the most common and literal translation.)

* Passez une bonne journée! (This is more polite and means "Have a good day!")

Informal:

* Bonne journée! (This works for both formal and informal situations.)

* Passe une bonne journée! (This is a more casual and friendly way to say it.)

* Profite de ta journée! (This means "Enjoy your day!")

Other options:

* A plus tard! (See you later!)

* A demain! (See you tomorrow!)

You can also add a little something extra to make your greeting more personal, like:

* Bonne journée à toi! (Have a good day to you!)

* Bonne journée à tous! (Have a good day to all!)

The best way to choose the right phrase is to consider your relationship with the person you're speaking to.