Board Thread:Naruto Discussions/@comment-28110020-20160611000929/@comment-3965545-20160611002713

He was shown to be out of the academy which usually ends at age 12, when he met Itachi at age 5. But since he is a genius/skilled/prodigy he probably got out at 11... I'd say he's around 4-7 years older than Itachi.