Stanford-Binet IQ Test — Start Now
Your gender is used to calibrate Stanford-Binet deviation IQ norms for the most accurate results. You can't skip a question and return to it later.
This test is for educational and entertainment purposes only, not a professional evaluation. First 5 days are just $7.99, then $39.99 every month. Cancel any time. Prices may vary by country and promotion.
About the Stanford-Binet IQ test
The Stanford-Binet Intelligence Scale is one of the most established IQ tests in psychology, dating back to 1916 and now in its fifth edition (SB-5). The IQ EXAM Stanford-Binet-style assessment mirrors the SB-5 framework: 25 questions distributed across the five core cognitive factors that the official SB-5 measures. You'll receive a deviation IQ score on the standard 100-point scale, plus a per-factor breakdown showing where your strengths sit.
Whether you want to compare your cognitive profile against the SB-5 norms, prepare for a clinical assessment, or simply check your IQ in a structured framework, this online Stanford-Binet test gives you results in under 20 minutes. Free to take, no signup required to start. As an intelligence quotient test it follows the standard deviation-IQ scoring that the official Stanford-Binet IQ test uses, so your number is directly comparable to other Stanford-Binet intelligence test reports.
People search for this assessment under many names — "Stanford-Binet SB5", "SB5 IQ test", "Stanford Binet 5", or just "Stanford Binet practice test". All refer to the same Stanford-Binet 5th-Edition framework, and this page is built to serve every variant. The SB5 score we return is a true deviation IQ on the 100-point scale (M=100, SD=15) — the same metric the official SB-5 uses, and a practical Stanford-Binet practice test before any clinical SB5 administration.
The five SB-5 cognitive factors tested
How the Stanford-Binet test works
- Pick your gender — used to apply age- and gender-adjusted Stanford-Binet norms.
- Answer 25 questions — multiple choice across the five SB-5 factors, no per-question time limit.
- Get your IQ score instantly — full report with percentile, factor breakdown, and an optional downloadable certificate.
Frequently asked questions
What is the Stanford-Binet test?
The Stanford-Binet Intelligence Scale is one of psychology's longest-standing IQ tests. The current SB-5 measures five factors: Fluid Reasoning, Knowledge, Quantitative Reasoning, Visual-Spatial Processing, and Working Memory. The IQ EXAM Stanford-Binet-style test mirrors that framework online.
Is the Stanford-Binet test free?
Yes — the assessment is completely free to take. You'll receive your IQ score and factor profile right away. The detailed report and downloadable certificate are an optional unlock.
How long does the Stanford-Binet test take?
About 20 minutes. There are 25 questions of progressively increasing difficulty, distributed across the five SB-5 factors with no per-question timer.
What is a good IQ score?
On the 100-point scale, 100 is exactly average and about two-thirds of people score between 85 and 115. A score above 130 is considered gifted (top ~2%), and above 145 is highly gifted (top ~0.1%). Your IQ EXAM report shows exactly where you fall and your percentile rank.
What is the average IQ?
The average IQ is 100 by definition — the scale is centred on 100 with a standard deviation of 15, so most people (about 68%) score between 85 and 115.
What's the difference between Stanford-Binet and Wechsler tests?
Both produce a deviation IQ on the 100-point scale. Stanford-Binet 5 uses 5 factors; Wechsler scales (WAIS, WISC) use 4 indexes. Stanford-Binet historically suits a wider age range; Wechsler is more common in adult clinical settings.
Do I get an IQ certificate?
Yes — after completing the test you can unlock an official IQ EXAM certificate showing your Stanford-Binet-style IQ score, percentile, and factor breakdown.
Is this an official Stanford-Binet test?
No — IQ EXAM is an online assessment inspired by the SB-5 factor structure. The official Stanford-Binet 5 is administered in person by a licensed psychologist. The IQ EXAM Stanford-Binet-style test is for educational and self-assessment purposes.
Can I retake the Stanford-Binet test?
Yes — full-access subscribers can retake the Stanford-Binet-style assessment whenever they like and track factor-level progress over time. Single-test purchases cover one report.
Is the Stanford-Binet test for adults or for children?
Both. The official Stanford-Binet 5 (SB-5) is normed from age 2 through 85+, making it one of the few intelligence-quotient tests with a single continuous norm across the full lifespan. The IQ EXAM Stanford-Binet IQ test is calibrated as an IQ test for adults aged 16 and over — for younger users we recommend an in-person SB-5 administration with a licensed psychologist.
What is deviation IQ on the Stanford-Binet?
Deviation IQ is the scoring method used by every modern Stanford-Binet test (SB-5 / SB5) and by the Wechsler scales. Instead of dividing mental age by chronological age (the old ratio IQ), deviation IQ places your raw score on a normal distribution with a mean of 100 and a standard deviation of 15. A deviation IQ of 130 means two standard deviations above the population average — roughly the 98th percentile. Every score this page returns is a deviation IQ.
Is this a Stanford-Binet practice test or the real SB5?
It is a Stanford-Binet practice test: an SB5-style online assessment modelled on the SB-5 / SB5 factor structure. The official Stanford-Binet 5 is administered in person by a licensed psychologist with standardised materials. This IQ EXAM Stanford-Binet practice test is a fast way to see your deviation IQ across the five SB5 factors before any clinical administration, or simply to check your cognitive profile.