BrainApps.io Brain Fitness
Login Get started

IQ score meaning

What does an IQ of 148 mean?

An IQ score of 148 falls in the Very high IQ range. On a scale with mean 100 and standard deviation 15, it is approximately at the 99.9th percentile.

Take an IQ test Open percentile table
148
Very high IQ range
99.9%
approx. percentile
130-160
range

IQ 148 interpretation

Very high scores are uncommon and should be interpreted through a standardized assessment, not a single online result.

The percentile means that this score is higher than roughly 99.9% of the norm group and lower than roughly 0.1% of the same group.

A single IQ number should be interpreted together with the specific test, age norms, confidence interval, and the pattern of strengths and weaknesses across subtests.

Useful next pages

Compare nearby IQ scores

IQ 133 Very high IQ range Approx. percentile: 98.6%
IQ 138 Very high IQ range Approx. percentile: 99.4%
IQ 143 Very high IQ range Approx. percentile: 99.8%
IQ 153 Very high IQ range Approx. percentile: 99.9%
IQ 158 Very high IQ range Approx. percentile: 99.9%

IQ score meaning FAQ

One IQ number is only a summary. It should be read with the test name, score range, confidence interval, age norms, and subtest pattern.

Tests can differ in tasks, timing, norms, reliability, language, and difficulty. Motivation, fatigue, and test conditions can also affect results.

A higher score can indicate stronger performance on certain cognitive tasks, but real-life success also depends on knowledge, habits, health, personality, opportunity, and goals.

Practice can improve familiarity with task types and reduce test anxiety. That does not always mean the underlying ability changed by the same amount.

Read the full score chart, percentile guide, and age-norm explanation. Together they give a more balanced view than a single score page.
IQ test online

Take an IQ test online

Use the BrainApps IQ test as a quick way to practice cognitive tasks and get a structured result. Treat online scores as screening information, not a clinical diagnosis.

Start IQ test Read the score chart