How do I say Hello John how are you in French?

There are a few ways to say "Hello John, how are you?" in French, depending on the level of formality you want to convey:

Formal:

* Bonjour, Jean, comment allez-vous ? (This is the most formal way to greet someone.)

Informal:

* Salut Jean, comment vas-tu ? (This is a casual way to greet a friend or someone you know well.)

* Bonjour Jean, ça va ? (This is a more common and neutral way to greet someone.)

Other options:

* Coucou Jean, comment ça va ? (This is a very informal way to greet someone, often used with friends.)

* Salut Jean, comment tu vas ? (This is a very informal way to greet someone, often used with close friends or family.)

Note:

* "Jean" is the French version of "John."

* You can replace "Jean" with the person's name in French.

* "Comment allez-vous?" is used for the formal "you," while "comment vas-tu?" is used for the informal "you."

* "Ça va?" is a more casual way of asking "how are you?" and literally means "is it going?"

It is important to choose the right level of formality based on your relationship with the person you are speaking to.