all in all vs on the whole

all in all and on the whole both are adverbs.

Word	Noun	Adjective	Verb	Adverb
all in all	No	No	No	Yes
on the whole	No	No	No	Yes

As adverbs, all in all and on the whole are synonyms defined as:

all in all and on the whole: with everything considered (and neglecting details)

Other synonyms of all in all include altogether, tout ensemble.

all in all (adverb)	on the whole (adverb)
with everything considered (and neglecting details)	with everything considered (and neglecting details)