1. How they are formed
Used to (past habits/states):
Subject + used to + V (base form)
Be used to (accustomed to):
Subject + am/is/are/was/were + used to + V-ing / noun
Get used to (becoming accustomed):
Subject + get + used to + V-ing / noun
Rule details
B2 (Upper-Intermediate)
Used to (past habits/states):
Subject + used to + V (base form)
Be used to (accustomed to):
Subject + am/is/are/was/were + used to + V-ing / noun
Get used to (becoming accustomed):
Subject + get + used to + V-ing / noun
Used to:
I used to live in London.
Be used to:
He is used to working late.
Get used to:
We are getting used to the new schedule.
Used to vs Be used to
Used to describes a past action; be used to describes being accustomed now or then.
Be used to vs Get used to
Be used to is a state. Get used to is a process of adaptation.