A.C.E Intelligence
Free tests, including official and fun tests, quizzes and optical illusions. Also provides history of the IQ test.
Cerebrals Society Online Intelligence Tests
Tests and questionaires prepared by members of the Cerebrals Society.
Daily IQ Test
Daily changing IQ-style questions of diverse nature for fun and learning purposes.
Expert Rating
Test for a fee that takes 30-40 minutes and provides online results.
GliaWeb
Various paid high-range tests offered along with IQ Society membership. Also provides free puzzles and games.
Intelligence Tests
List and rating of IQ tests available online.
International High IQ Society
Five free tests that measure different abilities. High score allows one to join the society.
IQ Inform
A 12-minute test for a fee, with certificate and multi-page report.
IQ Test
List of tests in wide-ranging or specific areas, and links to high intelligence societies.
IQ Tests
Directory of intelligence tests of varying psychological validity. Includes brief description and estimated time required for completion.
IQTest.com
Free test with information on intelligence testing and history thereof. Additional detailed reports are available for a fee.
Know yourself better
An IQ level indicates how one is positioned compared to the majority of individuals in a given age bracket.
Queendom IQ Tests
Various professionally designed online IQ tests.
Sentence Completion Test
Assesses English vocabulary knowledge. Presented as an experimental form of a verbal IQ test.
Sigma Test
Admission test for several high-IQ societies. Contains sections with various levels of difficulty.
SON-R Nonverbal Intelligence Tests
Individual tests for children not requiring use of language. Especially suited for children with problems in the areas of language and verbal communication. Norms available for ages 2 to 17.
Tests of Intelligence
Contains special and combined IQ tests and links to IQ and EQ sites.
The Smart Set of Tests
Free IQ tests for various age categories, and personality tests.
Ultimate IQ test link site
Over 100 links to IQ tests in various languages.
Uncommonly Difficult IQ Tests
Large variety of IQ tests, links to HIQ organizations, articles about intelligence.
USATests.com
Provides an online IQ, EQ and general knowledge tests that evaluate your intelligence.