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Free IQ tests that aren't entirely terrible
People often ask me about this. Where can I get my IQ measured online with some decent reliability, scientific rigor etc., without paying? There's many scam sites, and many sites that just provide you with flattering IQ scores. However, there are also some legit ones. Here's my collection. These have not generally been validated in the sense that someone acquired a really representative sample to make sure the norms are exactly right, but I have given them to people over the years, and they seem to do fairly well.
Figure tests, generally either Raven or close copycats:
Numerical tests:
17 item numeracy/quantitative reasoning test, IDR labs
Includes the usual 3 item Cognitive Reflection Test
English vocabulary
Vocabulary IQ Test at the generally good openpsychometrics.org
Note that this site provides public data for research!
Color discrimination, not exactly IQ but seemingly correlates strongly with it:
Mixed or multiple tests:
Discoverymyprofile - The Psychometrics Centre
Includes ICAR16, ICAR60 and others
ICAR is a mixed type test, with 4 types of items: spatial rotation, number series, verbal reasoning, and figures
This gives you random items from a big pool to simultaneously measure intelligence, personality, vocational interests etc.
The IQ items on this are from ICAR pool too
Others:
Vocational interests, this version is somewhat outdated due to old items, but probably ok
IPIP300, IPIP NEO-PI, 300 item detailed OCEAN-based personality test