Stanford-Binet · Est. 1905Let’s unwrap your brain, Stanford and Harvard style.

Stanford-Binet
Online IQ Test

A research-grounded online IQ assessment in the tradition of the Stanford-Binet — first published by Alfred Binet in 1905 and standardised at Stanford in 1916. The five-factor cognitive profile in 35 to 45 minutes.
Harvard-UniversityStanford-University
The only accredited online version of the Stanford-Binet.
Alfred Binet and Théodore SimonAlfred Binet & Théodore Simon, early 20th century
The Stanford‑Binet IQ test, as featured in
Alfred Binet conducting an intelligence assessment with a child, early 1900s
Binet, mid-assessment

Intelligence isn’t a single number — it’s five distinct cognitive factors working together. Stanford-Binet Intelligence Scales Fifth Edition measures each one separately, using updated norms and a scientifically developed framework, to reveal your cognitive profile: where your strengths lie, which areas may need support, and what kind of thinking comes most naturally to you.

So, what does your mind do best?See how the test works and unwrap your brain.