Not WAIS. Not WISC. Not Mensa.

Online IQ tests with published items, keys, and norms

Start with an age band: under 13 sees matrices, cubes, shape rotation, and icon memory, without adult word problems. From 13 you also get ICAR-16, vocabulary, and FSIQ. The report unlocks after a $1.99 payment.

Under 13 13 and older Where the items come from Free brain games

Two age bands
Under 13: matrices, cubes, shape rotation, and icon memory. 13+: those, plus ICAR, vocabulary, and FSIQ.
Keys stay on the server
Correct answers never ship to the browser. The report unlocks after a $1.99 payment.
Papers and GitHub
ICAR is public domain. Matrices come from IQ1.zip. ICAR-16 figures are from the Italian adaptation.

Under 13

Picture items only — no long word problems. This is not a WISC. The IQ figure is an open-norm estimate, not a clinical score.

Matrices, warm-up

short

First 8 IQ1 figure items — a short visual set

6–12 min · 8 items

Matrices

Same IQ1 keys. Norms: sum correct on Q1–Q8 in data.csv (n = 400, M = 5.02, SD = 1.81).

Open test

Matrices, short form

short

12 figure items with no reading — suitable under 13

10–18 min · 12 items

Matrices

Norms: sum correct on Q1–Q12 (n = 400, M = 7.34, SD = 2.60).

Open test

Matrices, second half

standard

IQ1 items 13–25 — typically harder than the first half

12–22 min · 13 items

Matrices

Norms: sum correct on Q13–Q25 (n = 400, M = 4.96, SD = 2.80).

Open test

OpenPsychometrics matrices

long

All 25 matrix items with published keys, n = 400

20–30 min · 25 items

Matrices

The items_matrix_reasoning set in the edmdata package. Norms M = 12.31, SD = 4.81.

Open test

ICAR: matrices only

short

The 4 Raven-style matrices from ICAR-16

5–10 min · 4 items

Matrices

Keys 5,2,2,4 (A=1). p = .52, .60, .62, .36.

Open test

ICAR: cube rotation

standard

4 mental rotation cubes — the hardest ICAR-16 items

6–12 min · 4 items

3D rotation

Keys 3,2,6,7. p = .17, .21, .29, .17 — low pass rates even in adults.

Open test

ICAR: spatial

standard

8 items: matrices plus cube rotation

10–15 min · 8 items

Matrices3D rotation

matrix+rotate keys from psych::iqitems. Almost no reading.

Open test

FSIQ: shape rotation

standard

6 figures: mark every rotation of the same shape

8–12 min · 6 items

3D rotation

Figures from demo/shapes.json. Norm n = 3,194, M = 13.86, SD = 7.71.

Open test

FSIQ: icon memory

short

6 short icon sequences, each shown once

6–10 min · 6 items

Short-term memory

Order and pauses match demo/subtest-ISM.js. Norm n = 3,194, M = 19.90, SD = 3.82.

Open test

Figural analogies, 12 pictures

standard

A picture rule, with new drawings. Any age.

12 min · 12 items

Matrices

Original figural analogies drawn for Open IQ. No published sample: mean and SD are the intended difficulties. Not a Raven matrix.

Open test

Odd picture out, 12 questions

short

Four shapes. One does not belong. No reading. Any age.

10 min · 12 items

Matrices

Original odd-one-out figures drawn for Open IQ. No published sample: mean and SD are the intended difficulties.

Open test

Comparison speed, 40 symbols

short

Find the matching symbol. Hard stop at about 90 seconds. Any age.

90 sec · 40 items

Comparison speed

Original symbol-matching items for Open IQ. No published sample: mean and SD are the intended difficulties. Not WAIS Coding or Symbol Search. Unanswered items score 0.

Open test

Sequence memory, 8 rows

short

Watch a short run, then pick that order. Any age.

8 min · 8 items

Short-term memory

Original order-memory items for Open IQ. No published sample: mean and SD are the intended difficulties. Not WAIS Digit Span and not the FSIQ icon-recognition items.

Open test

13 and older

Full ICAR-16, subscale splits, and letter series. Condon & Revelle norms come mostly from adult SAPA web samples.

Reflection, 5 questions

short

Five questions where the first answer is often wrong

8 min · 5 items

Verbal reasoningLetter series

Original reflection items for Open IQ. No published sample: mean and SD are the intended difficulties. Not Frederick’s Cognitive Reflection Test.

Open test

Speed mix, 20 questions

standard

Analogies, series, odd-one-out, and arithmetic. Hard stop at 12 minutes.

12 min · 20 items

Verbal reasoningLetter series

Original 12-minute mix for Open IQ. No published sample: mean and SD are the intended difficulties. Not a Wonderlic and not the Russian КОТ.

Open test

Word links, 12 cards

short

Three words, one word that joins all three

12 min · 12 items

Verbal reasoning

Original word-link cards for Open IQ. No published sample: mean and SD are the intended difficulties. Not Mednick’s Remote Associates Test.

Open test

Adult ADHD screen, 6 questions

short

Official ASRS v1.1 screener for ages 18 and over. Not a diagnosis. Questions stay in English.

3–5 min · 6 items

Verbal reasoning

Official ASRS v1.1 six questions, for the past 6 months. Wording is not translated. Shaded answers use the original 0–6 rule: 4 or more is a positive screen. The 0–24 score uses 14 or more as the later research cut-off. This is not an IQ and not a diagnosis. Kessler et al., Psychological Medicine, 2005. Copyright © New York University and President and Fellows of Harvard College.

Open test

Matrices, warm-up

short

First 8 IQ1 figure items — a short visual set

6–12 min · 8 items

Matrices

Same IQ1 keys. Norms: sum correct on Q1–Q8 in data.csv (n = 400, M = 5.02, SD = 1.81).

Open test

Matrices, short form

short

12 figure items with no reading — suitable under 13

10–18 min · 12 items

Matrices

Norms: sum correct on Q1–Q12 (n = 400, M = 7.34, SD = 2.60).

Open test

Matrices, second half

standard

IQ1 items 13–25 — typically harder than the first half

12–22 min · 13 items

Matrices

Norms: sum correct on Q13–Q25 (n = 400, M = 4.96, SD = 2.80).

Open test

OpenPsychometrics matrices

long

All 25 matrix items with published keys, n = 400

20–30 min · 25 items

Matrices

The items_matrix_reasoning set in the edmdata package. Norms M = 12.31, SD = 4.81.

Open test

ICAR: matrices only

short

The 4 Raven-style matrices from ICAR-16

5–10 min · 4 items

Matrices

Keys 5,2,2,4 (A=1). p = .52, .60, .62, .36.

Open test

ICAR: cube rotation

standard

4 mental rotation cubes — the hardest ICAR-16 items

6–12 min · 4 items

3D rotation

Keys 3,2,6,7. p = .17, .21, .29, .17 — low pass rates even in adults.

Open test

ICAR: spatial

standard

8 items: matrices plus cube rotation

10–15 min · 8 items

Matrices3D rotation

matrix+rotate keys from psych::iqitems. Almost no reading.

Open test

ICAR: 8-item snapshot

short

Two items from each ICAR-16 scale — a quick look at g

8–14 min · 8 items

Verbal reasoningLetter seriesMatrices3D rotation

Same official keys. Norm is the sum of selected item p-values (M ≈ 4.28).

Open test

ICAR: verbal

short

4 reasoning items (numbers, comparison, age, days of week)

5–8 min · 4 items

Verbal reasoning

Keys 4,4,4,6. p = .67, .69, .73, .61.

Open test

ICAR: letter series

short

4 letter sequences from ICAR-16

5–8 min · 4 items

Letter series

Keys 6,3,4,4. p = .62, .59, .62, .42.

Open test

ICAR: verbal + series

short

8 ICAR-16 items with no figures

8–12 min · 8 items

Verbal reasoningLetter series

reason.4–19 and letter.7–58. Word items, so 13+.

Open test

ICAR-16

standard

The full 16-item International Cognitive Ability Resource sample test

12–20 min · 16 items

Verbal reasoningLetter seriesMatrices3D rotation

Public domain, SAPA n ≈ 97,000. Keys from psych::iqitems. Adult norms — 13+.

Open test

Vocabulary, short form

short

15 English synonym pairs from the Vocabulary IQ Test, easy through hard

6–10 min · 15 items

Vocabulary

Same VIQT codebook keys. Norm is the number of correct pairs on these 15 items, n = 12,173 (M = 9.16, SD = 4.20).

Open test

OpenPsychometrics vocabulary

long

All 45 items: mark the two words that share a meaning. The words are English.

12–20 min · 45 items

Vocabulary

Item text and keys are the VIQT codebook. Norm is score_right, n = 12,173 (M = 32.93, SD = 8.80).

Open test

FSIQ: vocabulary

short

7 English items: mark every synonym, a wrong mark costs a point

6–10 min · 7 items

Vocabulary

Keys are the sets that scored the maximum in data.csv. Norm n = 3,194, M = 16.98, SD = 5.15.

Open test

FSIQ: shape rotation

standard

6 figures: mark every rotation of the same shape

8–12 min · 6 items

3D rotation

Figures from demo/shapes.json. Norm n = 3,194, M = 13.86, SD = 7.71.

Open test

FSIQ: icon memory

short

6 short icon sequences, each shown once

6–10 min · 6 items

Short-term memory

Order and pauses match demo/subtest-ISM.js. Norm n = 3,194, M = 19.90, SD = 3.82.

Open test

FSIQ alpha

long

Vocabulary, shape rotation, and icon memory — 19 items from one battery

18–30 min · 19 items

Vocabulary3D rotationShort-term memory

Sum of 19 items, n = 3,194, M = 50.74, SD = 12.48, α = 0.85. This is not a WAIS.

Open test

Number series, 15 questions

standard

What number comes next? Ages 13 and older.

12 min · 15 items

Letter series

Original number series for Open IQ. No published sample: mean and SD are the intended difficulties. Not the unpublished ICAR number-series pool.

Open test

Arithmetic reasoning, 12 questions

standard

Short worded quantities, with a time limit. Ages 13 and older.

12 min · 12 items

Verbal reasoning

Original arithmetic word problems for Open IQ. No published sample: mean and SD are the intended difficulties. Not a Wonderlic and not the Russian КОТ.

Open test

Figural analogies, 12 pictures

standard

A picture rule, with new drawings. Any age.

12 min · 12 items

Matrices

Original figural analogies drawn for Open IQ. No published sample: mean and SD are the intended difficulties. Not a Raven matrix.

Open test

Odd picture out, 12 questions

short

Four shapes. One does not belong. No reading. Any age.

10 min · 12 items

Matrices

Original odd-one-out figures drawn for Open IQ. No published sample: mean and SD are the intended difficulties.

Open test

Comparison speed, 40 symbols

short

Find the matching symbol. Hard stop at about 90 seconds. Any age.

90 sec · 40 items

Comparison speed

Original symbol-matching items for Open IQ. No published sample: mean and SD are the intended difficulties. Not WAIS Coding or Symbol Search. Unanswered items score 0.

Open test

Sequence memory, 8 rows

short

Watch a short run, then pick that order. Any age.

8 min · 8 items

Short-term memory

Original order-memory items for Open IQ. No published sample: mean and SD are the intended difficulties. Not WAIS Digit Span and not the FSIQ icon-recognition items.

Open test

General knowledge, 20 questions

standard

School-level questions written for each language. Ages 13 and older.

12 min · 20 items

Verbal reasoning

Original knowledge questions for Open IQ, with a separate wording in each language. No published sample: mean and SD are the intended difficulties. Not the OpenPsychometrics general-knowledge test.

Open test

Big Five, 50 statements

standard

Describe yourself as you are now. Five scores from 10 to 50. Ages 18 and older. Not an IQ.

8 min · 50 items

Verbal reasoning

Fifty Goldberg marker items. Each scale sums ten answers from 1 to 5; reverse-keyed items use 6 minus the answer. Scores run from 10 to 50. No percentile is shown. This is not an IQ, not a diagnosis, and not the NEO-PI-R. Goldberg, Psychological Assessment, 1992, 4, 26–42. Ages 18 and older.

Open test

Interests, 30 activities

short

How much would you like each activity? Six interest scores. Ages 14 and older. Not an IQ.

6 min · 30 items

Verbal reasoning

Thirty O*NET Mini Interest Profiler activities. Six sums from 5 to 25 are compared with sample means from Rounds et al. (2016), N = 575. The code is the top three letters. This is not an ability score and not an IQ. Ages 14 and older.

Open test

Brain games

Eleven short games for memory, speed, and attention. Free for every visitor. No account and no payment. A result here is practice, not an IQ score.

Number Memory Reaction Time Visual Memory Chimp Test Stroop Test Sequence Memory Verbal Memory N-Back Middle Arrow Pairs Quick Sums

Play

Questions about the online IQ test

Is this an official IQ test?

No. It is not WAIS, WISC, Raven SPM, or a supervised Mensa sitting. Most items come from the public-domain ICAR battery and OpenPsychometrics archives (matrices, vocabulary, and the FSIQ alpha), with published keys and norms. Three further sets — reflection, a 12-minute mix, and word links — are original items written for this site and have no published norm sample. The result is an estimate, not a clinical score.

Can I take an IQ test online here?

Yes. Choose an age band and start in the browser. Under 13, the tests are visual: matrices, cubes, shape rotation, and icon memory. From 13, ICAR-16, an English vocabulary scale, the FSIQ alpha, and three original sets (reflection, a 12-minute mix, and word links) are available too.

Is the IQ test free?

Taking the test is free. The scored report stays locked until a $1.99 payment through Stripe. There is no way to skip the payment and still see the score. Brain games are separate, and the score there is free.

How is the IQ score calculated?

The number correct is converted to an IQ scale with a mean of 100 and a standard deviation of 15, using the published mean and standard deviation of the norm sample. On the three original sets there is no norm sample: the mean and SD are the intended item difficulties, and the test page says so. Short forms show a wide interval. That interval is part of the result.

Which test is for a child under 13?

The matrix sets, the cube rotations, shape rotation, and icon memory. They do not use the adult word problems. This is not a substitute for WISC.

What is ICAR-16?

ICAR-16 is the 16-item sample of the International Cognitive Ability Resource: verbal reasoning, letter series, matrices, and 3D rotation. The items are public domain. On this site the full battery is offered from age 13.

Are the brain games free?

Yes. Every brain game is free for every visitor. There is no account and no payment. The score stays in this browser. It is practice for memory, speed, and attention, not an IQ report.