How do you say how are doing in french?

There are a few ways to say "how are you doing" in French, depending on the context and level of formality:

Formal:

* Comment allez-vous ? (This is the most formal and polite way to ask.)

* Comment vas-tu ? (This is slightly less formal than "Comment allez-vous?", but still polite.)

Informal:

* Ça va ? (This is the most common and casual way to ask.)

* Comment ça va ? (Similar to "Ça va?", but slightly more formal.)

* Comment tu vas ? (This is more informal and is used with friends or family.)

* Quoi de neuf ? (This literally means "What's new?" and is a good way to ask how someone is doing in a more conversational way.)

Choosing the Right Phrase:

* Use "Comment allez-vous?" with someone you don't know well or are in a formal setting.

* Use "Comment vas-tu?" with someone you know but are not very close to.

* Use "Ça va?" or "Comment ça va?" with friends or family.

* Use "Comment tu vas?" or "Quoi de neuf?" with close friends or family.

Remember that the best way to choose the right phrase is to consider the context and your relationship with the person you are speaking to.