All Might’s skinny form is generally understood to be about the same height as his buff form (around 220 cm / 7'2"–7'3"), but he looks shorter because he slouches and his body is emaciated.

Official height vs. skinny form

  • Official character data lists All Might (Toshinori Yagi) at about 220 cm, which is given as 7'2"–7'3" depending on the source.
  • Fans and forum discussions clarify that this height applies to both his hero (muscle) form and his true, skinny form, since his skeleton does not change.

Why he looks shorter skinny

  • In his skinny form, Toshinori is usually hunched over, with his neck and back curved, making him appear closer in height to characters around 5'11"–6'0".
  • Multiple fan explanations say his “transformation” is essentially puffing up his muscles rather than stretching his bones, so his apparent height difference is an animation/staging choice, not an in-universe change.

How fandom usually answers “how tall is All Might skinny form”

  • Common fan answers on Q&A threads summarize it as: “He’s still 7'2–7'3, just ridiculously slouched and skinny.”
  • Some character height lists even label his muscle-form height as 220 cm and mark skinny-form height as “unknown,” but commenters add that the safest assumption is “same height, different posture.”

So, if you need a number for “how tall is All Might skinny form,” the best- supported answer is: about 220 cm (around 7'2–7'3), but he appears shorter because he’s hunched and gaunt.

Information gathered from public forums or data available on the internet and portrayed here.