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Smart Kid IQ!

Discover your child's thinking strengths with a fun 20-question brain quiz — instant IQ-style score, clear explanations after every answer, and printable certificate. Made for ages 6–14, completely free, no sign-up needed. 🎉

🎂 Ages 6–14 ⚡ Instant results 🔒 No data collected 🆓 100% free, no sign-up
🎲
1,221
Question Bank
❓
20
Questions
⏱
30s
Per Q
🏆
IQ
Score
🧠
Smart IQ Quiz
Logic, maths, science, riddles & more!
1,221 questions
🌍
World Capitals
Can you name every capital city on Earth?
174 questions
🔷
Non-Verbal Reasoning
Shapes, patterns & sequences for Yr 4 & Yr 5
55 questions
📚
Verbal Reasoning
Synonyms, analogies, hidden words & more — 1 minute per question!
330 questions
✖️
Practice Times Table
Pick the right answer! Tables 1–12, 15 seconds per question.
How many questions?
➗
Practice Division
Pick the right answer! Facts from the 1–12 tables, 15 seconds per question.
How many questions?
🎮
Brain Games
Tic Tac Toe, 9×9 Sudoku, Word Find, Memory Match & Maths Blast!
5 games
🎂 Age:
Q 1 / 20
✅ Score: 0
30
🔢 Pattern

🎉
Brilliant!
0
/ 20 correct
IQ Score 100
🧠 Smart Brain Above Average
⭐ Average

📊 How You Did by Topic
Q 1 / 20
✖️ Times Tables
✅ 0
7 × 8 = ?
🎉
Practice Complete!
0 / 20

🚀 How It Works

1

Pick a Quiz & Age

Choose from IQ Quiz, World Capitals, Verbal Reasoning, NVR, or maths practice — then select the right age group for a fair challenge.

⏱ 10 seconds
2

Answer 20 Questions

Beat the timer on each question. Every answer — right or wrong — comes with a friendly explanation, so kids learn as they play.

⏱ about 10 minutes
3

Get Your Score

See an instant IQ-style score with a topic-by-topic breakdown, earn badges, and print a personalised certificate to celebrate.

⚡ instant

🧠 Why Brain Training Matters for Kids

Growing brains love a challenge

Between the ages of 6 and 14, a child's brain is at its most flexible — scientists call this neuroplasticity. Every time a child works through a tricky puzzle, spots a pattern, or reasons their way to an answer, the brain strengthens the connections used to do it. Regular, playful mental exercise builds concentration, working memory, and problem-solving stamina that carries straight into the classroom. Just 15–30 minutes of quiz practice a day can make thinking faster and learning easier.

What is verbal reasoning — and why practise it?

Verbal reasoning is the ability to understand and think with words: spotting synonyms and opposites, completing analogies, finding hidden words, solving letter sequences, and working out which word doesn't belong. It is a core part of the 11-plus and many grammar school entrance exams in the UK, and a strong predictor of reading comprehension and vocabulary growth. Our question bank now includes a dedicated set of 250 verbal reasoning questions — covering synonyms, antonyms, analogies, odd-one-out, letter series, hidden words, compound words, spelling, and word groups — so children can build these skills one fun question at a time.

Little and often beats cramming

Learning research consistently shows that short, regular practice sessions beat occasional marathon sessions. That is exactly how Smart Kid IQ is designed: each quiz is just 20 questions with a friendly 30-second timer, every answer comes with a clear explanation, and the session history lets children watch their own scores climb. Mix in our five brain games — Sudoku for logic, Maths Blast for number speed, Memory Match for working memory — and you have a complete daily brain workout that feels like play, not homework. Want the full science and study tips? Read our free Brain Training Guide.

❓ Frequently Asked Questions

What is Smart Kid IQ?
Smart Kid IQ is a free online brain quiz and games platform designed for children aged 6 to 14. It features 1,221 educational questions covering maths, science, logic, riddles, spatial reasoning, geography, and more — plus five free brain games including Tic Tac Toe, 9×9 Sudoku, Word Find, Memory Match, and Maths Blast.

Is Smart Kid IQ free to use?
Yes — completely free! There is no subscription, no sign-up, no login, and no download required. Simply open the website on any phone, tablet, or computer and start playing immediately. Every quiz, every game, every feature is 100% free.

What age group is the quiz designed for?
The quiz is designed for children aged 6 to 14 years old. Before the quiz begins, you can select your age group (6–8, 9–11, or 12–14) and the questions are matched to the right level of difficulty. Younger children get more straightforward questions, while older children face genuinely challenging brain-teasers.

How is the IQ score calculated?
At the end of the 20-question quiz, your score is converted into an estimated IQ score ranging from 70 (just starting out) to 145 (ultimate genius). This is an educational, motivational score — not a certified clinical IQ assessment. It is designed to be encouraging and to improve as children practise more. The seven IQ levels are: Just Starting (70–79), Good Thinker (80–89), Smart Cookie (90–99), Sharp Mind (100–109), Super Brain (110–119), Mega Genius (120–134), and Ultimate Genius (135–145).

What topics are covered in the IQ quiz?
The Smart IQ Quiz covers 11 different topic areas: Logical Reasoning, Number Patterns, Maths Problems, Science Facts, Riddles, Verbal Reasoning, Spatial Thinking, Word Play, Memory Challenges, Creative Thinking, and General Knowledge. The World Capitals quiz mode covers all 195 countries and their capital cities — a great geography revision tool!

What brain games are available?
Smart Kid IQ has five free brain games: (1) Tic Tac Toe — play against an unbeatable computer AI or a friend; (2) 9×9 Sudoku — the full classic number puzzle with Easy, Medium, and Hard difficulty levels; (3) Word Find — spot hidden words in a 10×10 letter grid across 4 themes with 5 word sets each; (4) Memory Match — flip emoji cards and find all 8 matching pairs; (5) Maths Blast — answer as many mental maths questions as you can in 60 seconds.

Is it safe for children? Is personal data collected?
Smart Kid IQ is designed with children's safety as the top priority. We do not collect any personal data from children. No name, email address, location, or identifying information is ever requested or stored. The site has no chat features, no social elements, and no user-generated content. Any adverts shown are non-personalised, child-safe, and compliant with COPPA and UK GDPR. See our Privacy Policy for full details.

Can I use Smart Kid IQ in school or at home?
Absolutely! Smart Kid IQ is used by children both at home and in school settings. Teachers can use the quiz as a warm-up activity, a revision tool, or a mental maths starter. Parents can encourage children to play as part of a daily learning routine. We recommend 15–30 minutes per day for the best results. Read our full Brain Training Guide for tips on how to get the most out of the site.

How can I improve my score?
The best way to improve is to play regularly! Read the explanation shown after each question — even when you get the answer right. Try all three quiz modes (Smart IQ, World Capitals, Non-Verbal Reasoning) as they build different skills. Play the brain games too — Sudoku builds logical thinking, Maths Blast builds number speed, and Memory Match strengthens working memory. Visit our Brain Training Guide for science-backed tips on improving memory, maths, and logical reasoning.