How do you say how is he in French?

"How is he?" in French can be translated in a few ways, depending on the context and formality:

Formal:

* Comment va-t-il ? (This is the most common and formal way to ask)

Informal:

* Comment il va ? (More informal, but still polite)

* Ça va ? (This is very informal and literally means "How is it going?", but can be used for "How are you?" or "How is he?")

* Il va bien ? (This literally means "Is he going well?" and is more informal than "Comment va-t-il?")

Note: You can also add a name after the phrase to clarify who you're asking about. For example:

* Comment va-t-il, Jean? (How is he, John?)

* Ça va, Pierre? (How are you doing, Peter?)

The best option will depend on the specific situation and your relationship with the person you're speaking to.