How do you say how are informally in portuguese?

There are a few ways to say "how are you" informally in Portuguese, depending on the level of informality and the region:

Common and versatile:

* E aí? (Hey there? - This is very casual and widely used.)

* Tudo bem? (Everything okay? - This is a bit more polite than "E aí?")

* Como vai? (How are you? - This is slightly more formal than "Tudo bem?")

Regional variations:

* Tudo sussa? (Everything chill? - This is common in Brazil.)

* Tudo em cima? (Everything on top? - Another Brazilian slang expression.)

* Como tá? (How are you doing? - More common in Brazil.)

Other options:

* Como está? (How are you? - More formal than "Como vai?")

* O que há? (What's up? - Very casual and common among young people.)

Remember:

* Use "E aí?" or "O que há?" with close friends.

* "Tudo bem?" or "Como vai?" are good choices for most situations.

* "Como está?" is more formal and can be used with people you don't know well.

* The Brazilian slang options are more casual and can be used with friends.

The best choice will depend on the context and your relationship with the person you're talking to.