Character matchup

Senku Ishigami vs Tony Stark: who is smarter?

Senku is a few points ahead on our estimate, mostly on the breadth of what he rebuilds from nothing, while Tony has the better machinery and the better instincts.

Reviewed September 2026By the LifeScore Editorial TeamEditorial policy

Dr. Stone

Senku Ishigami

165

range 155 to 175 · medium confidence

Rebuilds civilization from scratch

Marvel Cinematic Universe

Tony Stark

160

range 148 to 170 · medium confidence

Builds the future from spare parts

Round by round

Six ratings out of ten for each, from the profiles. Senku Ishigami takes 3 of the rounds, Tony Stark takes 0, and the higher overall estimate is Senku Ishigami by 5.

Senku Ishigami and Tony Stark compared
RoundSenku IshigamiTony StarkEdge
Deduction8/107/10Senku Ishigami
Strategy8/106/10Senku Ishigami
Knowledge10/109/10Senku Ishigami
Invention10/1010/10Level
Adaptability9/109/10Level
Reading people6/106/10Level

What settles it

Senku starts from zero. In a world with no industry he makes medicine, chemicals and eventually far larger machines by working out each step and building the tools for the next. His knowledge spans chemistry, engineering and biology, and it almost never fails him.

Tony's best feats are just as strong in one respect: he builds the first version of his suit in a cave from scrap, and builds a new element in a workshop. He has more resources most of the time, but he also solves harder theoretical problems in a shorter time. What holds him back is impulsiveness and a habit of solving the wrong problem when he is angry.

The main caveat on Senku is the story around him. It supplies him with recipes he could plausibly remember and materials he could plausibly find, and it gives him time. That keeps the gap small. Senku edges it on breadth and reliability, Tony on raw ingenuity.

The strongest evidence for each

Senku Ishigami

  • The revival fluid (Dr. Stone, early Stone World chapters)
  • Curing Ruri's pneumonia (Dr. Stone, Kingdom of Science / Ishigami Village arc)
  • Building a cell phone (Dr. Stone, Kingdom of Science years)

Full Senku Ishigami profile

Tony Stark

  • Iron Man armor built in a cave (Iron Man (2008))
  • Synthesizing a new element (Iron Man 2 (2010))
  • Cracking time travel at the lake house (Avengers: Endgame (2019))

Full Tony Stark profile

Senku Ishigami vs Tony Stark: common questions

Who is smarter, Senku Ishigami or Tony Stark?+

Senku is a few points ahead on our estimate, mostly on the breadth of what he rebuilds from nothing, while Tony has the better machinery and the better instincts.

What is Senku Ishigami's IQ compared with Tony Stark's?+

We estimate Senku Ishigami at about 165 (range 155 to 175) and Tony Stark at about 160 (range 148 to 170). Both are fan-analysis estimates built from what each character does in their story.

Who would win a battle of wits, Senku Ishigami or Tony Stark?+

Give both a stone-age start and Senku pulls ahead. Give both a lab and a deadline, and it is very close.