What is the difference between tu estas and ustedes estan?
Everyone says they both mean you are. but what is the difference? is one singular and one plural?
PLZ hurry and answer! 
thx to everyone who answers 
1 Answer
Hi!
Both are forms of the verb "estar" is the present tense, indicative mood.
Tú estás -- this is the you familiar form. This is used for people younger than you and close friends and family.
Ustedes están -- this is the you plural form. This is used when saying "you all".
You are exactly right in your post --- one is singular, one is plural. Estás is singular, están is plural.
For example:
This is you, speaking to your best friend:
You (familiar) are very tired today -- (Tú) estás muy cansado hoy.
This is a teacher, speaking to his or her students collectively:
You (you all) are very tired today -- (Ustedes) están muy cansados hoy.
Not to add to the confusion or anything, but don't forget about usted está and vosotros estáis (if you are studying the Spain you all).
