square up vs square off

square up and square off both are verbs.

Word	Noun	Adjective	Verb	Adverb
square up	No	No	Yes	No
square off	No	No	Yes	No

As verbs, square up and square off are synonyms defined as:

Other synonyms of square up include determine, settle.

square up (verb)	square off (verb)
make square	settle conclusively; come to terms
settle conclusively; come to terms
even up the edges of a stack of paper, in printing