Stanford Binet
  • About ▼

    The site

    • About this assessmentWhat it is and isn’t
    • How accurate it isReliability and the honest psychometric answer
    • Compare to other IQ testsHonest side-by-side
    • What 10,000 profiles taught usOriginal data

    The history

    • The Binet history hubWhere it all started
    • Alfred BinetThe man behind the name
    • Théodore SimonThe forgotten co-author
    • Binet’s writingsOriginal passages with sources
    • Mental orthopedicsBinet’s training method
  • The Test ▼

    What’s measured

    • The five factorsSB5 model overview
    • Innate Intelligence
    • Working Memory
    • Visual-Spatial Processing
    • logical-mathemtical intelligence
    • Knowledge

    Take the test

    Full-Scale IQ-equivalent plus the five factor indices. 35 to 45 minutes. From $49.

    See pricing →
    • Try the 5-question sample
    • Why this is certified
  • Score Guide ▼

    Average range

    • IQ 85 - Average
    • IQ 90 - Average
    • IQ 100 - Average
    • IQ 110 - Average
    • IQ 115 - Above Average

    Above Average, Talented & Genius

    • IQ 120 - Above Average
    • IQ 125 - Above Average
    • IQ 130 - Talented
    • IQ 135 - Talented
    • IQ 140 - Talented
    • IQ 145 - Genius
    • IQ 150 - Genius
  • Free Tools ▼

    Calculators

    • Percentile calculatorScore → percentile + rarity
    • Mental age calculatorBinet’s original ratio
    • Score converterSB5 ↔ Wechsler ↔ Cattell
    • Mensa eligibility checkDoes my score qualify?
    • All free tools →

    Want your real score?

    Calculators are quick estimates. The full Stanford-Binet covers all five factors and gives you a Full-Scale IQ-equivalent score in 35 to 45 minutes.

    See pricing →
  • For You ▼

    By age

    • IQ test for kids5-11 years
    • IQ test for teens12-17 years
    • IQ test for adults18-60 years
    • IQ test for seniors60+ years

    By question

    • “What’s it like?”5-question free sample
    • “Is it accurate?”Reliability honest answer
    • “How do you compare?”vs. Mensa, IQ Exam, and other online tests
    • “What does it cost?”Pricing
  • Blog
Sign inTake the test

The site

  • About this assessment
  • How accurate it is
  • Compare to other IQ tests
  • What 10,000 profiles taught us

The history

  • The Binet history hub
  • Alfred Binet
  • Théodore Simon
  • Binet’s writings
  • Mental orthopedics
  • The five factors
  • Innate Intelligence
  • Working Memory
  • Visual-Spatial Processing
  • Logical-mathematical intelligence
  • Knowledge
  • Why this is certified
  • All score explanations
  • IQ 85 — Average
  • IQ 100 — Average
  • IQ 115 — Above Average
  • IQ 130 — Talented
  • IQ 145 — Genius
  • Percentile calculator
  • Mental age calculator
  • Score converter
  • Mensa eligibility check
  • All free tools →
  • By age (overview)
  • For kids
  • For teens
  • For adults
  • For seniors
  • Blog
  • 10,000 profiles report
  • Pricing
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Stanford Binet

A specialized center in educational psychology. Established 2001 in the UK with research and partner sites worldwide.

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  • About this assessment
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  • How accurate it is
  • Compare to other tests
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The Test

  • What it measures
  • Innate Intelligence
  • Working Memory
  • Visual–Spatial Processing
  • logical-mathemtical intelligence
  • Knowledge
  • IQ Tools

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