Sometimes when someone is leaving they will say "I'm off" and "I'm out" as the same but what it means is I'm leaving. Another example for "I'm out" is this: the boss asks the worker if he is able to come in on his day off from work and the worker says,"I'm out, boss." Meaning I am not going to be able to do it

"To be off", colloquially used to mean leaving, presently. It's very common in the UK at least. "So, we've finished? I'm off, then..." "We're off home now. Bye" "Got your coat on already? Are you off?" "Right, I've had enough. I'm off for a smoke/fag/cigarette/tab/infinite dialectical variations..." "I'm off to walk the dog." Or in a *slightly* more indirect way, also very common (has a slight sense of additional politeness, I'd say): "I'll be off" "We'll be off home now" Also used to mean off work, as the others have explained. (It is also used to mean 'spoilt' when talking about food, as a variation of 'gone off'. "Wow. Smell that... This fish is off." - that is, is rancid, is rotten or generally not safe to eat anymore) "To be out", simply to not be somewhere for a while. "Can I send a plumber round this afternoon?" - "Not really, we're out" (not home) "What about Thursday?" - "We'll be out then, too" "I called your office this morning, you weren't there" - "Yeah, I was out." (By the way, "to be out" is widely used to mean out drinking, or eating to a lesser extent. As in a "night out". "Are you out this Friday?" - "No, I've been out too much this month. I need a break. I'm skint, anyway.") This is a good question, these are nice little phrases with many uses. I've just remembered that the expression, "I'm off out..." is also very common here, too. Which is pretty comical. It's used the same way as "I'm off" just with slightly more emphasis on "...outside".

to be off- abandon, give up example: The singing contest was declared to be off. to be out - to be away from the inside example: You don't only know how it feels to be out in the jungle. to be out - not to be part of something example: I want to be out of this discussion.

Firstly , you should say " I have an important question for you or I have a question which is important to me. ) to be off -- to depart /no more here. I will be off if you keep annoying me / I will be off as soon as the bell rings . Usaually . the usage is for leaving a place which you are not longer eager to be in anymore , i think . To be off -- to cancell off/ no more . eg You did not do as i told you , so all my promises are to be off To be off --- When are you be off this week? (means when are u off work ) To be out is quite similar to' to be off ' as in I will be out of here in 10 minutes/ i will be off in ten minutes . 'Off' emphasis no more/leave / depart , 'out' emphasis u going out from where you are in . you will be out if you cant keep up with them ( as in getting out off a race a race) I will be out for 10 minutes . i will be off in ten minutes . One just tell u wont be around for 10 mins , the other say are are going away in 10 minutes