IQ Percentile Calculator
Enter an IQ score (mean 100, SD 15). Result is an approximate IQ percentile for educational context. See the IQ score chart, percentile definition, or invert with the IQ score calculator.
Approximate percentile:
IQ to percentile reference (SD 15)
| IQ | Approx. percentile |
|---|---|
| 85 | ~16th |
| 100 | 50th |
| 115 | ~84th |
| 120 | ~91st |
| 130 | ~98th |
When to use an IQ percentile calculator
After a matrix-based assessment, percentile context helps you interpret IQ test results relative to the general population. For Mensa-style screening shorthand, try the Mensa eligibility calculator.
Want your own score? Take the 25-question CertifiedIQ matrix assessment and compare your result with the same percentile framework.
Start the Certified IQ Test →Reviewed by Scientific Review Team · Normal approximation · Methodology
FAQ
What IQ score is the 98th percentile?
On a Wechsler-style scale (SD 15), roughly IQ 130 corresponds to about the 98th percentile — the common Mensa-style cutoff area.
Is this calculator official?
No. It uses a normal-distribution approximation for education only. Official percentiles come from the specific test manual and norm group.
How is IQ percentile calculated?
Percentile ranks compare your score to a norm group. This tool assumes a normal distribution with mean 100 and SD 15, converting IQ to a z-score then to cumulative percentile.
IQ score calculator → · Mensa eligibility calculator → · IQ 130 meaning →