IQ Percentile Calculator
Determine your IQ percentile ranking and understand how your intelligence compares to the population
Calculate Your IQ Percentile
Typical range: 40-200 (Average: 100)
Most common tests use SD = 15
IQ Percentile Results
Enter your IQ score to see your percentile ranking
Score Analysis
IQ Classifications
Wechsler Scale
Percentile Ranges
Standard IQ Tests
Wechsler Scales
WAIS-IV (Adults), WISC-V (Children)
SD = 15, Most widely used
Stanford-Binet 5
SB5 Intelligence Scale
SD = 15, Comprehensive assessment
Cattell Culture Fair
Non-verbal intelligence test
SD = 16, Reduced cultural bias
Woodcock-Johnson
Cognitive abilities assessment
SD = 15, Educational focus
IQ Distribution Facts
68% of people score between 85-115
95% of people score between 70-130
Only 2% score above 130 (gifted range)
Average IQ is exactly 100 by definition
Understanding IQ and Percentiles
What is IQ?
IQ (Intelligence Quotient) is a measure of cognitive abilities and fluid intelligence. It represents your ability to learn, reason, recognize patterns, and solve problems compared to others of your age group.
What are Percentiles?
A percentile indicates the percentage of people who score at or below your level. For example, the 90th percentile means you scored better than 90% of people who took the test.
Why Does IQ Matter?
- •Predicts academic performance
- •Correlates with job performance in complex tasks
- •Helps identify learning differences
- •Assists in educational planning
Normal Distribution
IQ scores follow a normal (bell curve) distribution with:
- Mean: 100 (average score)
- Standard Deviation: 15 or 16 (depending on test)
- Range: Typically 40-200
Distribution Breakdown:
Important: IQ tests should be administered by qualified professionals. Online tests are generally not reliable for official assessments.
⚠️ Medical Disclaimer
This calculator provides educational information only and should not replace professional psychological assessment. IQ scores can be influenced by many factors including test anxiety, cultural background, education, and health status. For official IQ assessment, consult a licensed psychologist or educational specialist. If you have concerns about cognitive abilities or learning differences, seek professional evaluation.