How do you say..my heart is broken in French?

There are a few ways to say "my heart is broken" in French, depending on the nuance you want to convey:

Formal:

* Mon cœur est brisé. (This is the most literal translation and sounds very formal.)

Informal:

* J'ai le cœur brisé. (This is the most common way to say it and sounds more natural.)

* Mon cœur est en mille morceaux. (This means "my heart is in a thousand pieces" and is a more poetic and dramatic way to say it.)

More specific:

* Je suis dévasté(e). (This means "I am devastated" and conveys a feeling of deep sadness.)

* Je suis anéanti(e). (This means "I am annihilated" and conveys a feeling of complete despair.)

The best way to say it depends on the context and the emotion you want to express.