How do you say i am fantastic in french?

There are a few ways to say "I am fantastic" in French, depending on the level of formality and emphasis you want to convey:

Formal:

* Je suis fantastique. (This is the most literal translation and is perfectly acceptable in formal settings.)

Informal:

* Je suis génial(e). (This is a more common and casual way to say "I am fantastic.")

* Je suis super. (This means "I am great" and is a very informal way to say you're feeling fantastic.)

* Je suis au top. (This means "I am on top of the world" and is a more emphatic way to express that you're feeling great.)

Other options:

* Je me sens super bien. (This means "I feel great" and is a more personal way to express how you're feeling.)

* Je suis en pleine forme. (This means "I am in top shape" and is a more literal way to say you're feeling fantastic.)

The best way to choose which phrase to use will depend on the context and your relationship with the person you're speaking to.