Eleven accusers, nine women and two men, took the stand over the searing six-week trial to describe sexual humiliation and violence.
After two days of deliberation, the jury found Kelly guilty on all the charges he was facing.
He is due to be sentenced on 4 May, and faces decades behind bars.
Prosecutors accused Kelly of using his fame and fortune to lure in victims with promises to help their musical careers. Several of his victims testified that they were underage when he sexually abused them.