In German

Hallo

Meaning: hello (the general greeting, and on the phone)

Formal or informal? “Hallo” works with almost everyone. On the phone, Germans often answer with “Ja, bitte?” or their surname instead.

Example sentences

“Hallo” is an interjection and never changes. A rising tone turns it into a question, as on the phone.

Don't expect “Hallo” to be the first word on every phone call. Germans often answer with “Ja, bitte?” or their name.

Which is the standard German greeting you can use with almost anyone?

Often “Ja, bitte?” or “Müller.” (their surname). “Hallo?” is also used.

Yes, it's polite and neutral. For a very formal tone, many people add “Guten Tag”.