Start Here
Interpret Scores Before You Drill Into One Number
Guides & ToolsThe score pages below are useful, but most visitors should start with a chart, percentile tool, or interpretation guide first. These pages help turn a raw number into something clearer and more trustworthy.
Reference
IQ Score Chart
See the main score ranges, percentiles, and common labels in one place.
InterpretationWhat Is a Good IQ?
Understand what people usually mean by good, above average, and gifted.
ToolIQ Percentile Calculator
Convert a score into percentile rank and rarity using the standard IQ scale.
NormsAverage IQ by Age
See why age norms matter and why the average stays 100 at every age.
40–65
Intellectual Disability
26 pages
66–69
Borderline
4 pages
70–89
Low Average
20 pages
90–109
Average
20 pages
110–119
High Average
10 pages
120–129
Superior
10 pages
130–139
Gifted
10 pages
140–149
Highly Gifted
10 pages
150–160