"Hallo, wie haben seit du?" is an ungrammatical sentence without any discernable meaning.
Hallo - Hello
wie - how
haben - to have (infinitive)
seit - since
du - you
"Hallo" is the normal translation for "hello"
The term "Hi" is also used amongst younger Germans.
, how are you today would be either Hallo, wie geht es dir heute (informal) or
Hallo, wie geht es Ihnen heute. (formal)
Hi Jake Hallo Jake
Hallo Feuerwehrmann
Hallo, Hi
In German, "hi" and "hello" are the same, "Hallo". But you can also use the English "hi", since German is adapting a lot of new foreign words at the moment and hi has been used in German for many years already.
Hallo Blödmann
The word for high is the same in German. High
Hallo Guten Tag
Hallo. He. ('He' sounds just like 'Hey')
"Hallo Briana" or "He Briana" ('He' sounds just like 'Hey')
Hallo, hi, Servus, Grüß Dich
Guten Nachmittag is the way to say it in German.
Hallo Logan! I looked it up so I'm sure its that.