Formal:
* Magandang araw po. (Good day, po.) - Used for elders or people you don't know well.
* Magandang hapon po. (Good afternoon, po.) - Also used for elders or people you don't know well.
* Magandang gabi po. (Good evening, po.) - Also used for elders or people you don't know well.
Informal:
* Hello. (This is the borrowed English word, commonly used.)
* Kumusta ka? (How are you?) - This is a common greeting for friends and family.
* Kumusta? (How are you?) - A more concise version of the above.
Note: "Po" is a politeness marker used after a sentence when speaking to someone older or of higher social status. You can also use "opo" as a response to "yes."
The most common way to say "hello" in Tagalog is "Hello." It's simple and widely understood.