What's the difference between thanks and thank you?

[mynameisjohn]

[Lopezz1999]

You usually say thanks if you want to express appreciation without meaning. A "thank you" is more meaningful as far as expressing appreciation.

[notallthere98]

Thanks is mre casual. Thank you is more sincer and heartfelt

[Chanel1981]

Thanks is a less formal, sometimes considered a less meaningful, version of thank you

[james_mark]

Thanks means yea.. okay
Thank you, i appreciate you helping me out

[AleDeEurope]

Same thing.

[ASEXY]

There is no difference.