Jimmy Neutron IQ

Jimmy Neutron's IQ is about 150 (range 138 to 165) for an eleven-year-old. The franchise is commonly said to give 210, but his inventions keep backfiring, which points to a gifted child and not a mind at the very top.

Are you smarter than Jimmy Neutron? Jimmy's IQ is about 150. What's yours?

Take the IQ test

25 questions · about 12 minutes

J

Key facts

Estimated IQ
150
Range
138 to 165
Confidence
Medium. A fair amount of evidence, with some gaps.
Franchise
Jimmy Neutron: Boy Genius. Jimmy Neutron: Boy Genius (2001 film) and The Adventures of Jimmy Neutron (2002 to 2006)
Stated in the story
210

Fan analysis by the LifeScore Editorial Team, reviewed September 2026. How we estimate

What is Jimmy Neutron's IQ?

Jimmy is a child inventor in the town of Retroville who builds rockets, robots and shrink rays in a backyard lab. His inventive range is far beyond what any real eleven-year-old could manage. The cartoon also makes his gadgets malfunction, and he often misjudges people and consequences. That pairing, brilliant ideas with poor risk control, is why we place him in the high gifted range and not at the number usually quoted.

Age-normed for an 11-year-old.

How they score

Six ratings out of ten, each based on what is shown on the page or screen. They show how the estimate is built; they are not averaged into it.

DeductionSolving new problems from thin information
7/10
StrategyMulti-step plans that account for other minds
6/10
KnowledgeDepth and breadth of what they know
8/10
InventionBuilding or devising something genuinely new
10/10
AdaptabilityRecovering when the plan breaks
7/10
Reading peopleUnderstanding what other people want and will do
4/10

What the canon says

Jimmy Neutron: Boy Genius states an IQ of 210. Commonly cited as 210 in franchise descriptions and fan wikis. We could not trace the figure to a specific episode. For a child it is a ratio-style score, and the cartoon's recurring failures do not match a mind that far from average.

Scene-by-scene evidence

  1. The backyard laboratory

    Strong evidence

    Series-wide

    Jimmy builds a working lab, a robot dog named Goddard, vehicles and household machines from parts and clever ideas. Continuous invention at this level shows engineering knowledge and creative thinking that go far beyond his age. Cartoon physics does the heavy lifting, so we cannot verify the engineering, but the breadth and speed of his output is the strongest evidence for invention in the profile.
  2. Saving the town in the film

    Strong evidence

    Jimmy Neutron: Boy Genius (2001)

    In the film, the parents of Retroville are taken by aliens after Jimmy sends out a signal, and the children must go to rescue them. Jimmy leads the effort, improvises vehicles and uses his inventions to cope with a hostile world. It shows planning and leadership as well as invention, although he is helped by his friends, and his signal is the cause of the problem, a point that counts against him.
  3. Learning and quick thinking

    Moderate evidence

    Series-wide

    Jimmy picks up new science concepts fast and talks about them with confidence. His "brain blast" moments in the show are an explicit signal that he finds solutions by combining ideas that others do not connect. It is a cartoon device, so it works as a label for pattern formation and creative association, and counts as moderate evidence. That label is a cartoon convention, but it does tell us the show wants us to see his ideas as combinations.
  4. Rivalry with Cindy Vortex

    Moderate evidence

    Series-wide

    Cindy is a close rival in school and often beats him on judgement or on reading a situation. The show treats her as the one classmate who can match him, and their contests are about who is right rather than who is cleverer in a technical sense. It places a limit on how far above his peers he is, in the areas where ordinary smarts count.
  5. A stated 210

    Minor evidence

    Franchise materials

    Fan wikis and character guides commonly give Jimmy an IQ of 210. We could not trace the line to an episode, so we record it as a franchise claim. A child score is a ratio of mental age to real age, which can be very high without matching adult ability, and it does not translate to the modern scale. It reads as a franchise boast and not as a measurement.

What holds the number down

  1. Inventions that backfire

    Series-wide

    Most episodes begin with a clever gadget and end with it causing chaos. A mind at the very top of the scale would anticipate more failure modes. The recurring pattern shows that his foresight is limited.
  2. Poor social judgement

    Series-wide

    Jimmy misreads friends, ignores warnings and often acts on a plan that others can see is risky. In our method this is a significant factor, because reading people is part of intelligence and is where he is weakest.
  3. Cartoon logic

    Series-wide

    The show is a comedy for children, and the science is a convenience. We cannot judge a gadget that works because the plot requires it, so our confidence stays at medium. For that reason we judge the type of ideas, not whether any given invention would work in real life.

Why 150, and not higher or lower

Invention and knowledge carry the estimate, and both are scored for a child of eleven. Deduction is good, and adaptability is solid, since he fixes his own messes under pressure. Insight and risk judgement are weak, as the plots depend on inventions causing harm. The commonly quoted 210 would be an off-scale child score, which the cartoon does not support with matching feats.

IQ estimates for fictional characters are fan analysis: an argument from what the story shows, not a measurement. Read the full method and the standards we hold every profile to.

The debate

Jimmy is regularly compared with Dexter from Dexter's Laboratory, another child inventor with a secret lab. Dexter is more focused and more careful, while Jimmy is more social and more daring. Against Stewie Griffin, Jimmy has less menace and a smaller body of strategic evidence. Fans who cite 210 put him at the top, but the evidence puts him close to Lisa Simpson, a gifted child with a very different style.

Jimmy Neutron IQ: frequently asked questions

What is Jimmy Neutron's IQ?

The franchise is commonly said to give 210. We could not trace it to a specific line, and our estimate from his inventions and mistakes is about 150, range 138 to 165, age-normed for an eleven-year-old.

Is Jimmy Neutron smarter than Dexter?

Dexter shows more care and a tighter focus, and Jimmy shows more range and more social ability. We rate them close, with Jimmy slightly ahead on invention.

Why do Jimmy's inventions keep failing?

In story terms it creates the plot. In our method it counts as evidence that his foresight is limited, which holds his estimate below the highest bands.

Are you smarter than Jimmy Neutron? Jimmy's IQ is about 150. What's yours?

Jimmy's number is an argument from the story. Yours can come from a real test: 25 visual reasoning questions.

Take the IQ test

25 questions · about 12 minutes

Jimmy Neutron and Jimmy Neutron: Boy Genius belong to their respective owners. LifeScore is not affiliated with them. This page is independent commentary and analysis, and estimates are our own opinion.