Free · 25 questions · 12 minutes

Find out where your reasoning runs hot.

A free, ad-supported IQ test grounded in open-source psychometric item banks. Get an instant score, a breakdown across five cognitive domains, and brain-training recommendations — without an upsell, a paywall, or a "premium PDF" hiding the result.

100+calibrated items
5cognitive sub-tests
0emails required
~12maverage completion
Abstract pattern recognition matrix illustrating the MindRank IQ test. Norm-referenced · Mean 100, SD 15
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The Sub-tests

Five cognitive domains. One composite score.

The test draws balanced items from each domain so the score reflects general reasoning, not just whichever skill you happen to be strong at. Each sub-test is mapped to a Cattell-Horn-Carroll (CHC) broad ability and modeled on the public ICAR catalog.

Why we built MindRank IQ

A serious test, without the funnel.

Most free online IQ tests are a funnel: twenty questions, a score you cannot see, and a thirty-dollar pay button between you and the result. We thought that was a bad trade for everyone except the funnel.

MindRank IQ is the version we wanted: a clean test, an immediate breakdown, articles you can actually read, and ads you can ignore if you choose. The items are modeled on the public-domain pools used in academic research — Raven-style matrices, ICAR-style verbal and spatial items, and standard numerical series.

Read more about the project →

300+indexable pages
60deep articles
7IQ band guides
25improve guides
Score Interpretation

Where does your score land?

Seven IQ bands cover the full distribution from extremely low through very superior, each with its own deep interpretation page.

Browse the full IQ score guide →

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From the Library

Recently published articles

  • What Is IQ? A Modern Definition
    IQ — short for intelligence quotient — is a normed score on a standardized cognitive test, calibrated so that the population mean is 100 and the standard deviat…
  • A Brief History of IQ Testing
    The first modern intelligence test was developed by Alfred Binet and Théodore Simon in 1905, commissioned by the French Ministry of Public Instruction to identi…
  • The Cattell-Horn-Carroll Model of Intelligence
    The Cattell-Horn-Carroll (CHC) model is the dominant contemporary framework for organizing the empirical findings of cognitive ability research. It synthesizes …
  • Fluid vs. Crystallized Intelligence
    The distinction between fluid and crystallized intelligence — Gf and Gc in the CHC framework — is one of the most useful ideas in modern cognitive assessment. F…
  • The 'g' Factor: What Charles Spearman Discovered
    In 1904, the British psychologist Charles Spearman published a paper that would shape the next century of intelligence research. He noticed that performance on …

All 60 articles →

Brain Training

Improve specific cognitive skills

All brain training guides →

What People Say

Reader feedback

I've taken half a dozen online IQ tests and this one is the first that actually breaks down the result by category in a way that matches what I know about my own reasoning.

Reza H., Researcher, Tehran

I appreciated that there was no upsell at the end. Just a score, a breakdown, and links to read more. That's exactly what I wanted.

Maya L., Software engineer, Berlin

I used the per-category breakdown to explain to a student why he was struggling on word problems despite acing geometry. Useful framing.

Daniel K., High-school teacher, Chicago

Ready when you are.

25 calibrated items. About twelve minutes. Instant breakdown across five cognitive domains, with no email and no paywall.

Start the free test →