Free dyscalculia test · no sign-up
A free dyscalculia test that shows where numbers get hard
Five short games map how you see, compare and remember numbers. Then short daily exercises train exactly the part that needs it.
Screening, not a diagnosis. Nothing you enter leaves your device.
Let's play 5 quick games!
There's no wrong answer. The games show how you see, compare and remember numbers.
Under 5 minutes · free · no sign-up
Everything runs in your browser. Answers are not sent anywhere.
How dyscalculia support works here
- 1
Play five short games
Count dots, compare numbers and groups, place a number on a line, remember digits. Under 5 minutes, in the browser.
- 2
See the number-skills profile
A strength and a focus area across four skills, explained in plain language — for a child or for yourself.
- 3
Practise a few minutes a day
The web program turns the profile into adaptive daily exercises with a fox guide and four age worlds — right in your browser.
The 5 games in the free dyscalculia test
- 1 / 5
Count the Dots
Seeing small amounts at a glance, without counting one by one.
- 2 / 5
Which is Bigger?
Linking a digit to the amount it stands for.
- 3 / 5
Which Group Has More?
Judging which of two groups is larger — the approximate number sense.
- 4 / 5
Place the Number
Placing numbers in order and in proportion on a 0–100 line.
- 5 / 5
Remember the Digits
Holding a sequence of digits in working memory.
The four number skills behind dyscalculia
Research on dyscalculia points to a small set of basic number skills. The test and the exercises are organised around them.
Number Sense
Seeing small amounts at a glance and comparing quantities.
Space & Position
Placing numbers on a mental number line and comparing their size.
Fact Memory
Holding numbers in mind while working with them.
Arithmetic Flow
Adding and subtracting fluently — practised in the daily program.
Daily dyscalculia practice in your browser
196 levels, 10 exercise types and spaced repetition that brings back what is still hard. It starts from the focus area in your test profile and works on any computer, tablet or phone, for ages 4 to adult.
Try 5 levels freeAlso available as an app for Android:
Short answer
What is Dyscalculia.io?
Dyscalculia.io is a free online dyscalculia screening test that runs in the browser without an account. Five short games measure subitizing, number comparison, quantity estimation, number-line placement and working memory, and the result is a four-part number-skills profile. It is a screening tool, not a diagnosis.
- Free, no sign-up, and answers stay on your device.
- Takes under 5 minutes and works for children from age 4 and for adults.
- Uses the same five games as the Dyscalculia app for Android.
- Available in English, German, French, Spanish, Dutch and Brazilian Portuguese.
Learn about dyscalculia
- What is dyscalculia?Dyscalculia is a specific learning difficulty with numbers. Here is what the word means, how common it is, what causes it, which skills it affects and what helps.
- Dyscalculia symptomsThe signs of dyscalculia look different at 5, at 10 and at 30. Here is what to watch for at each age, what else the signs can mean and what to do next.
- Dyscalculia in adultsDyscalculia does not end with school. How it shows up in adult life, how to get support as an adult and strategies that make numbers easier.
- Dyscalculia exercisesShort activities with dice, cards, counters and a number line that practise the basic number skills behind dyscalculia — grouped by skill and age, five minutes a day.
- How to helpDyscalculia does not go away on its own, but the right kind of help makes numbers far more manageable. Here is what that help looks like, who can give it and what to avoid.
- How dyscalculia is diagnosedWho carries out a dyscalculia assessment, what happens during the evaluation, which criteria are used — and where a free online screening fits in before all of it.
- AccommodationsAccommodations change how a pupil with dyscalculia is taught and tested, not what they are expected to learn. Here is what is common, how to ask for it and what the main school systems call it.
- Dyscalculia vs dyslexiaOne affects numbers, the other reading and spelling. They often occur together, but they are different learning difficulties with different roots — and each needs its own screening and support.
Frequently asked questions
Is the dyscalculia test really free?
Yes. The test and the result are free and need no account. The optional daily practice program runs in your browser; the first 5 levels of each age world are free with an account, and a parent area with a daily time limit sits behind a parent check.
Can an online test tell if I have dyscalculia?
No online test can diagnose dyscalculia. A screening like this one shows which number skills take extra effort, which helps you decide whether to seek a professional assessment.
What age is the test for?
Children from about age 4, teenagers and adults. Choose who is taking the test before you start; adults can use the dyscalculia test for adults.
What happens to my answers?
They stay in your browser. Nothing is sent to a server, and closing the tab clears them.
What is dyscalculia?
Dyscalculia is a specific learning difficulty with numbers: understanding quantities, learning number facts and calculating. Read the full explanation.