IQ 127

127 is 27 points above average and 1.80 standard deviations up. You score higher than 96.4% of people, so in a class of 30 you would typically be one of the top 1. It sits 12 points into the above-average band, 3 short of the 130 mark often used for gifted programmes.

This is a common range among people in academic and professional work, but it is far from a requirement. Plenty of people outside it do the same jobs well.

Scores here are well within what standard tests measure precisely, so a 127 from a good, supervised test is a meaningful signal rather than noise.

Careers are chosen, not assigned by score. Research on general mental ability, summarised in work such as Schmidt and Hunter (1998), suggests a 127 helps most in complex roles and during training.

Fields that reward this profile include engineering, analysis, teaching, nursing, law, finance, software and skilled technical trades, where learning new material is part of the job.

Where you end up depends heavily on interest, persistence and people skills. None of those is measured by an IQ test.

The difference between 127 and 100 rarely looks like brilliance. It tends to look like this:

• You tend to spot the pattern in a problem sooner, especially with numbers, diagrams or rules.
• Quick reasoning does not protect against bias. It can make a confident wrong answer more persuasive.
• Skills such as writing, coding or playing an instrument still take years of practice to master.

Scoring 127 or higher is a 3.6% share of everyone. Scaled up to whole populations, that works out as:

Going from 122 to 127 makes a score 2 times rarer, and going on to 132 multiplies the rarity by another 2.2. Near 127, each single point adds about 16% to the rarity.

What your 127 could really be. Treat any single score as the centre of a range. For a good supervised test, about 5 points either side is typical, so 127 really means somewhere from 122 to 132. Online tests are less precise than that.

Which scale was it on? Score reports do not always say. On the common SD 15 scale your 127 stands as it is. If the report used SD 16 it equals about 125, and if it used SD 24 about 117. The percentile follows the converted number.

Retrospective estimates for historical figures rarely go this low, because they are only made for people with exceptional achievements. A few sit near 127. Every figure below is a retrospective estimate, not a measured score. Open a profile to see the evidence and how confident anyone can be.

Rough benchmarks from our profiles that sit within a few points of 127. Degree and university figures are estimates derived from admissions-test averages, not measured IQs.

How 127 stacks up against the scores just around it and the round numbers people usually ask about. Each score links to its own page.

People with an IQ of 127 typically score about 1370 on the SAT and about 28 on the ACT composite. Scores vary a lot from person to person, so the range shows where about four in five land.