Even if he comes up short, either physically or mentally, he knows to rely on his friends to give him whatever support he needs. Given the evidence, Luffy's IQ could easily be anywhere between 90 and 130.
Given the evidence, Luffy's IQ could easily be anywhere between 90 and 130. This would make his intelligence at least average and maybe a little above average, although not quite genius-level.
Although not often seen in the series, One Piece author Eiichiro Oda has confirmed Beckman to have the highest IQ in East Blue.
Sanji - 120. he s intelligent but not a scientist; Brook - 110.
Roronoa Zoro
At the very least, Zoro is a little smarter than his captain. He knows how to calculate a little, (such as correctly answering Luffy's "108 x 2" question), has made a plan to defeat Pica, and has correctly guessed that Baroque Works lured them into a trap.
115 to 129: Above average or bright. 130 to 144: Moderately gifted. 145 to 159: Highly gifted. 160 to 179: Exceptionally gifted.
Garry Kasparov (IQ Level = 194)
Garry Kimovich Kasparov, a Russian chess grandmaster, has an IQ level of 194. Apart from being a former world champion in chess, he is also a writer and political activist, and commentator. Kasparov ranked No. 1 from 1984 to his retirement in 2005.
Goku-76, Probably higher than you thought but he often proves he can do smart things too. Vegeta-106, About average intelligence and is never shown to have superior intelligence. Piccolo-115, Often portrayed to have clever moments and leads the Z fighters in a smart way. Bulma-190, No surprise Bulma's REALLY smart.
2) Gedatsu
Fortunately for Luffy and Zoro, there are most definitely two dumber characters in the series than them. One of them comes from an early One Piece arc in the form of Sky Priest Gedatsu, who is easily one of the series' most absentminded characters.
Luffy may not be the smartest character in One Piece, but he has almost unrivaled instincts and great emotional intelligence.
Over the years, he's faced adversity in many forms and overcome them with his many power-ups. Currently, Luffy is strong enough to fight the strongest of the Yonko in a one-on-one battle, making him extremely capable.
While Luffy is fearless, carefree, and self-assured, there at times his confidence and pride were diminished. In fact, Luffy's one and only greatest insecurity lies with his inability of being able to protect the ones closest to him.
An IQ score over 140 indicates that you're a genius or nearly a genius, while 120 - 140 is classed as "very superior intelligence". 110 - 119 is "superior intelligence", while 90 - 109 is "normal or average intelligence".
The average IQ for a 13-year-old is roughly between 90 and 109, with 100 being the average. The highest score is 145, and the lowest score is 61.
The Genius Threshold: 130 and Beyond
While there is some debate among psychologists, a widely accepted threshold for genius IQ scores is 130 or above. This score places an individual in the top 2% of the population, making them exceptionally intelligent.
1 Shikamaru Nara
He was believed to have an IQ over 200 by his teacher, Asuma, and could defeat opponents significantly stronger than he was, provided there was even the slightest chance of victory.
It has been established that Naruto is not the smartest character in the series. Often, fans have witnessed his emotions dictate the way he fights. However, there were multiple instances when he could calmly assess the situation and use a suitable technique to counter the opponent's attacks.