I agree with sezme's answer. When I talk, I say "wanna." When I write, I use "want to."

Want to es la forma correcta. Wanna es bien informal. Es como una versión corta pero no suena bien en conversaciones formales. Es un poco similar a "para" y "pa". No creo que alguien dijera "pa ti" en una conversación que no sea informal. Wanna no es algo que suena feo pero es importante saber cuando usarlo.

It is actually the same I want is the correct way to write it I wanna is an american slung You're welcome :)

"Wanna" is not a real word. You can't go wrong using "want to" for all writing.

"Wanna" technically isn't a real word, but when speaking it's what "want to" sounds like. Same for "gonna" (going to) or "shoulda" (should have)