How tall do you think Harry, Tom, and Voldemort are?
HARRY: Harry’s physique as a boy was described as “small and skinny”, with a thin face and knobbly knees, due to his poor quality of life in his childhood.
So because Harry grew up in a cramped, dark room, he did not have regular exposure to UV, meaning he was pale skinned. He was not fed on a regular basis, as we never see the Dursleys feeding him ever, and he was threatened with ‘no meals’ as a form of punishment. So lack of proper nutrition in the most important growth years of his life, have resulted in him being skinny, bony, and pale.
With stunted growth, Harry won’t be tall. It was canon fact that Harry was not going to be physically imposing in any way and it was pure luck when Daniel Radcliffe stopped growing at 5’5″. Harry is not a big character in canon. I don’t like it when people ignore his horrible upbringing and what it did to him physically.
If they make him take potions, or do a ritual, or hell, get him out of his shitty ‘home’ then yes, making his 5’10” is a possibility. If that doesn’t happen, I don’t fly with it.
TOM: Earlier in life, Tom Marvolo Riddle was tall and handsome, with pale skin, jet black hair, and dark eyes. Riddle’s good looks continued to increase as he grew older, and he cunningly used them to charm many of the teachers at Hogwarts.
Tom Riddle was described as tall. Slender, not skinny or bony. He had to at least be 6 ft. I cannot abide by it when people make him short. Seriously, he didn’t live like Harry, so he physically wouldn’t be the same. Tom wasn’t described as unhealthy and it was never mentioned that he missed meals or was punished by not being allowed to eat, so we don’t really know about that.
What we do know is that he is tall canonically.
VOLDEMORT: After he regained his body, however, Voldemort was described as having pale white skin, a skeletally thin body, and dark scarlet eyes with cat-like slits for pupils. He had a chalk-white face that resembled a skull, snake-like slits for nostrils, and long, thin hands with unnaturally long fingers like spider’s legs.
I believe that Voldemort was much taller than Tom Riddle had been. A new body, and the description of it, make him sound unnaturally long and sort of alien.
Basically, I envision Harry at about 5’6″, Tom at 6’2″, and Voldemort at around 6’4″-6″.