How do I say how was your day in french?

"How was your day?" in French can be said in a few different ways, depending on the formality and context:

Formal:

* Comment s'est passée votre journée? (This is the most formal and polite way to ask.)

Informal:

* Comment était ta journée? (This is more casual and friendly.)

* Comment ça va aujourd'hui? (This literally means "How are you today?" but can also be used to ask about someone's day.)

* Et toi, comment ça a été ta journée? (This is a more relaxed way to ask, implying you've already talked about your own day.)

Other options:

* C'était comment ta journée? (This is a very informal and colloquial way to ask.)

* Alors, comment ça s'est passé aujourd'hui? (This is a bit more conversational.)

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