I’m 6’1” (186cm) barefoot and measured. Trump claims to be 6’3” (190cm).
I stood next to a wax statue of him at Madame Tussaud’s, which is famous for its exact replicas, and I was comfortably an inch taller than that statue and it was in heeled shoes (I was wearing flat-soled Connie’s), so Trump is 6’0” max, but my guess is he’s just under - maybe 5’11” (183cm).