Free IQ Test — Which One Should You Take?

Quick answer: Seven free IQ tests are available on iqtest.training — Mensa-style, Eysenck, Carter, Classic, plus age-specific versions for kids 6 to 17. Each takes 10–30 minutes, shows your full score with percentile and classification, and requires no sign-up or email. Below is a side-by-side comparison to help you pick.

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Ultimate IQ Challenge: Classic Genius Test

1 / 40

Select the correct figure from the four numbered ones.

D

C

B

A

The second and third figures in each row contain inside one each of the two small inside fig;ures of the first drawing, rotated through 90 degrees.

2 / 40

Insert the missing number.
16 (27) 43
29 (__) 56

Check

The number in the brackets is the difference between the numbers outside the brackets.)

3 / 40

Find the odd man out.
GABER YRFRE NUKKS THACY

THACY

YRFRE

NUKKS

GABER

SKUNK. All the others are boats: barge, ferry, yacht.

4 / 40

Insert the missing number.
1 8 27 __

Check

Cube numbers 1, 2, 3, 4 respectively.

5 / 40

Isotherm is to temperature as isobar is to:

pressure

latitude

atmosphere

current

wind

6 / 40

Insert the missing letters.
Write the letters in the field below separated by commas.

Check

The word reads evidence in a clockwise direction.

7 / 40

What number should replace the question mark?

Check

Looking at lines of numbers from the top: 9×8=72; 72×8=576; 576×8=4608

8 / 40

Insert the missing letter
W T P M I __

Check

Skip 2 and 3 steps back in the alphabet alternately.

9 / 40

Which is the odd one out?

B

D

E

C

A

The rest are the same figure rotated.

10 / 40

What number should replace the question mark?

A

E

D

C

B

There are two alternate sequences: –1¼ and +1¼

11 / 40

Insert the word that means the same as the wordsoutside the brackets.
COMPETITION (____) GROUP

Check

12 / 40

Complete the five words below in such a way that the two letters that end the first word also start the second word, and the two letters that end the second word also start the third word etc. The same two letters that end the fifth word also start the first word, to complete the cycle.
** IV **
** OT **
** IC **
** NG **
** RA **

Check

13 / 40

What letter is directly opposite the letter that is two letters away clockwise from the letter that is directly opposite the letter E?

Check

14 / 40

How many minutes is it before 12 noon, if 48 minutes ago it was twice as many minutes past 9 am?

Check

12 noon less 44 minutes = 11.16, 11.16 less 48 minutes = 10.28, 9 am plus 88 minutes (44 × 2) = 10.28

15 / 40

Insert the missing word.
GRID (ring) HANG
STIR (____) GAFF

Check

The first letter of the word in the brackets is the second letter of the first word, the second is the third letter of the first word, the third is the third letter of the second word, the fourth is the fourth letter of the second word.

16 / 40

What number should replace the question mark?

Check

Looking across at the three circles, the number in the middle is the product of the two numbers in the same segment in the other two circles. Thus, 3×2=6, 7×3=21 and 4×4=16

17 / 40

Which word meaning LOCALITY becomes a word meaning TEMPO when a letter is removed?

Check

18 / 40

What is the next number in the series?
18 10 6 4 __

Check

Each number is obtained by adding 2 to the previous one, and then dividing by2;4 + 2 = 6;6 divided by 2 = 3.

19 / 40

Insert the missing number,
12 (56) 16
17 (__) 21

Check

Add the numbers outside the bracket and double the sum.

20 / 40

Which is the missing section?

A

D

B

C

Eeach opposite corner block of four squares are identical.

21 / 40

Insert the missing word.
CROSS (sore) RENTS
MAKES (____) INLET

Check

The first letter of the word in brackets is the fifth letter of the first word, the second is the third letter of the first word, the third is the first letter of the second word, the fourth is the second letter of the second word.

22 / 40

able, rot, son, king
Which word below shares a common feature with all the words above?

sit

hope

line

night

take

All words can be prefixed with PAR to form another word – parable, parrot, parson, parking, partake

23 / 40

Find the odd man out.
BALET RACIH PATERC NACIMORA

NACIMORA

RACIH

PATERC

BALET

MACARONI. All the others are furniture: table, chair, carpet.

24 / 40

A man has 53 socks in his drawer: 21 identical blue, 15 identical black and 17 identical red. The lights are fused and he is completely in the dark. How many socks must he take out to make 100 per cent certain he has a pair of black socks?

Check

If he takes out 38 socks, although it is very unlikely, it is possible they could all be blue and red. To make 100 per cent certain that he also has a pair of black socks he must take out a further two socks

25 / 40

Insert the word that completes the first word and begins the second.
PRACT (. . .) BERG

Check

26 / 40

Identify two words (one from each set of brackets) that have a connection
(analogy) with the words in capitals and relate to them in the same way.
GRAM (energy, weight, scales)
KNOT (water, rope, speed)

water

rope

scales

weight

energy

speed

27 / 40

Find two words (4, 6) in this diagram. Letters are traced across the circle by chords. If the next letter is four letters or less away it will be found by tracing around the circumference. Clue: free flight.

Check

28 / 40

Insert the word that means the same as the two words outside the brackets.
CARD-GAME (____) ROD

Check

29 / 40

Work from square to adjacent square horizontally or vertically (but not diagonally) to spell out a 12-letter word. You must find the starting point, and provide the missing letters.

Check

30 / 40

broke rage prose cute dared ________
Which word is missing?

palm

snow

evil

hymn

take

When joined together each pair of words forms another word – brokerage, prosecute, daredevil.

31 / 40

7 3 9 6 4 1 3 7 9 3 5 4 1 7 6 5

Find five consecutive numbers above that total 22. Write the numbers without spaces on the line below, for example: 229344

Check

32 / 40

Select the correct figure from the six numbered ones.

E

C

D

F

B

A

There are three types ofskirt, three positions ofarms, andthree kinds of feet.

33 / 40

Insert the missing number.

Check

The numbers on the left half of the circle are 3 times the opposite numbers of the right half.

34 / 40

Which word in brackets is most opposite to the word in capitals?
PROSCRIBE

indict

allow

verify

stifle

promote

35 / 40

Which figure is missing in the above sequence?

B

A

D

F

E

C

The red dot is moving up (then down) by one position at each stage.

36 / 40

Insert the word that completes the first word and begins the second.
SHR (___) LING

Check

37 / 40

Select the correct figure from the six numbered ones.

F

D

E

C

A

B

The figure in the third colunm is made up of the lines from the figures in the first two columns which are not in common to both.

38 / 40

Which word in brackets is closest in meaning to the word in capitals?
BRUNT (dull, edifice, impact, tawny, nonsense)

nonsense

impact

tawny

edifice

dull

39 / 40

Which number is the odd one out?
9678 4572 5261 5133 3527 6895 7768

3527

5261

5133

6895

4572

9678

7768

In the others the sum of the first two numbers is equal to the sum of the second two numbers, for example 5+2=6+1

40 / 40

Which two words are closest in meaning?
conclave, medley, theme, conglomeration, dissertation, augury

theme

dissertation

conclave

conglomeration

augury

medley

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Which free IQ test should you take?

The best test depends on why you want it: a quick check, Mensa preparation, verbal-heavy reasoning, or a test suited to a child’s age. Here is a plain-language comparison of the free IQ tests on this site.

Not sure where to start? The Classic IQ Test is the best single overall option for adults — it blends questions from the three main test traditions.

What makes a free IQ test genuinely free?

Many “free” IQ tests online hide the score behind a paywall or ask for your email before showing results. A truly free test:

• Requires no sign-up or email address
• Shows the full score instantly — not a teaser
• Does not push you to buy a “detailed report”
• Explains what the score means in plain English

Every test on iqtest.training meets all four criteria.

How free IQ tests are scored

All modern IQ tests are built on the same statistical scale: average = 100, standard deviation = 15. That means:

• About 68% of people score between 85 and 115
• About 2% score at or above 130 (the gifted range)
• Only about 0.1% score above 145

Curious where you would fall? Use the IQ percentile calculator to see your rank on the bell curve.

Are free online IQ tests accurate?

A well-built free IQ test gives a useful estimate of your reasoning ability. It is not equivalent to a supervised clinical test (like the WAIS or WISC) which requires a licensed psychologist and controlled conditions.

Treat the result as a snapshot: helpful for curiosity, practice or gauging strengths, but not a formal diagnosis or Mensa admission.

Free IQ tests by age

Reasoning ability is age-normalised — a “good” score is the same at every age (100 is always average). But the questions themselves need to match the child’s developmental level. Pick the test that matches your child’s exact age:

• Age 6
• Age 7
• Age 8
• Age 9
• Age 10
• Age 11
• Age 12
• Age 13
• Age 14
• Age 15
• Age 16
• Age 17

How to get the most accurate result

1. Take the test rested and focused — pick a quiet moment, not right after work or before bed.
2. Do not look up answers — it inflates the number and defeats the purpose.
3. Take each test only once — repeating the same test raises the score through familiarity, not real ability.
4. Read the score explanation, not just the number. What the score means matters more than the number itself.

Frequently asked questions

Is iqtest.training really free?

Yes. Every test on this site is free, requires no sign-up, and shows the full result immediately. There is no paywall or “premium report” upsell.

Which free IQ test is the most accurate?

All well-built online IQ tests are estimates. For a single overall score, the Classic IQ Test blends question styles from the three major traditions. For Mensa preparation, the free Mensa-style test is the most relevant.

How long does a free IQ test take?

Most adult tests take 20 to 30 minutes; the Quick EQ test takes 10; kids’ tests take about 15 to 20 minutes depending on age.

Do I need to register for a free IQ test?

No — every test on this site loads directly, and results appear on-screen. Nothing is stored or sent to your email.

Can I take an IQ test for my child online?

Yes. Pick the age-appropriate test from 6 to 17. Take it as practice or as an insight into reasoning skills, not as a clinical diagnosis.

Online tests provide an estimate and are not a clinical assessment. For a formal IQ score consult a licensed psychologist.

Related free tests

• Free IQ Test for Adults
• Mensa IQ Test
• Classic IQ Test
• IQ Percentile Calculator
• Free IQ Test hub — compare all tests