What is the English translation for Que onda?

"Que onda" is a very informal Spanish greeting, similar to "What's up?" or "How's it going?" in English.

Here are some English translations for "Que onda":

* What's up? (Most common and informal)

* How's it going? (Slightly more formal)

* What's going on? (Can also be used)

* How are you doing? (More formal)

* Hey! (Very casual)

The best translation depends on the context and the tone you want to convey.