Attention Span Test: Free Online Focus and Concentration Test
Numbers flash on screen one at a time. Click for every number except 3. In one minute you get a focus score, your missed digits, your mistakes and a picture of how your attention changed.
This free attention span test uses a sustained attention task, the same kind of task researchers use to study focus and concentration. It is quick, private and needs no sign-up.
Ready to test your focus?
Click or tap for every number EXCEPT 3
One number appears every second for one minute. On a computer you can also press the space bar. Stay relaxed and keep your eyes on the centre of the box.
Click for every number EXCEPT 3
Your attention score
out of 100
Good
Your accuracy through the test
Please enable JavaScript to take the attention span test.
How the attention span test works
- Get ready. A three-second countdown starts the test.
- Watch the numbers. A single digit from 1 to 9 appears in the middle of the box for a fraction of a second, once every second, in different sizes.
- Click for every number except 3. Click, tap or press the space bar for each digit. When the digit is 3, hold back and do nothing.
- See your result. After one minute you get your attention score, the digits you missed, the times you clicked on a 3 and how your accuracy changed through the test.
Your best score is saved in your own browser so you can try to beat it.
What the attention span test measures
- Sustained attention: staying focused on a simple, repetitive task for a full minute.
- Response inhibition: holding back an automatic response when the rare 3 appears.
- Vigilance: noticing every digit, even as the task becomes repetitive.
- Consistency: keeping a steady speed and accuracy from start to finish.
The test is based on the Sustained Attention to Response Task, or SART, which researchers introduced in the 1990s to study everyday lapses of attention. Because you respond to most digits, clicking becomes automatic, and that makes it harder to notice and withhold a response to the rare 3.
Attention span test scores: what is a good result?
Your attention score averages two rates: how often you clicked for the other digits, and how often you held back on the 3s. Averaging the two stops you from getting a high score just by clicking on everything.
| Attention score | Rating | What it usually means |
|---|---|---|
| 90 to 100 | Excellent | Steady, accurate focus with very few lapses or slips. |
| 80 to 89 | Very good | Strong focus with occasional mistakes. |
| 70 to 79 | Good | Reliable focus, with some automatic clicks on the 3. |
| 60 to 69 | Fair | Your attention drifted at times. A quiet spot and slower clicks can help. |
| Below 60 | Keep practising | Try again when you are rested and free from distractions. |
There are no official norms for this online version, so use the ratings as a guide and compare your own results over time. Many people click on some of the 3s, because responding becomes automatic. That is normal and does not mean anything is wrong.
This attention span test is for education and entertainment. It cannot diagnose ADHD or any other condition. If you are worried about your attention, please speak to a doctor or another qualified professional.
What affects your attention span
- Sleep. Tiredness is one of the biggest causes of attention lapses.
- Distractions. Notifications, noise and open tabs all pull your focus away.
- Time of day. Most people have times when they focus better than others.
- Stress and mood. Worry and stress use up mental energy.
- Interest. Boring tasks are harder to stay with than engaging ones.
- The task itself. Long, repetitive tasks make attention fade over time.
How to improve your attention span
Reduce interruptions
Silence notifications and close extra tabs before you start. Fewer interruptions leave more attention for the task.
Work in focused blocks
Many people find that working for about 25 to 50 minutes followed by a short break keeps their focus fresh. This is a practical tip rather than a scientific rule, so adjust it to what works for you.
Look after the basics
- Get enough sleep, because rested people notice more and make fewer slips.
- Move regularly, since even a short walk can refresh your focus.
- Practise single-tasking by doing one thing at a time.
- Repeat this test at the same time of day to see how your focus changes.
Is the average attention span really 8 seconds?
You may have read that humans now have an eight-second attention span, shorter than a goldfish. This claim comes from a marketing report and has no solid scientific support. In reality, attention depends on the task, your interest and your surroundings, so there is no single average number. Tests like this one measure how well you can sustain attention on a specific task, not a universal span.
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Attention span test FAQs
What is an attention span test?
An attention span test measures how well you can stay focused on a task over time. This free test uses a sustained attention task: numbers appear one at a time, and you respond to every number except one. It shows how accurate and consistent your focus is over a minute.
How does this attention span test work?
Digits from 1 to 9 flash on screen once a second for one minute. Click or press the space bar for every digit except 3. Your score combines how often you responded to the other digits with how often you held back on the 3s, and it shows how your focus changed through the test.
What is a good attention span test score?
There are no official norms for this online test, so treat the ratings as a guide. As a rough guide, 90 or above is excellent, 80 to 89 is very good, 70 to 79 is good, and 60 to 69 is fair. Compare your own scores over several attempts, because tiredness and distraction change results.
Is the average attention span really 8 seconds?
No. The claim that humans have an eight-second attention span, often compared with a goldfish, comes from a marketing report and has no solid scientific support. Attention depends on the task, your interest and your surroundings, so there is no single average number.
How long is a normal attention span?
There is no fixed normal length. People can focus for a few minutes on a boring task or much longer on something engaging. Many people find that working in blocks of about 25 to 50 minutes with a short break works well, but that is a productivity tip, not a scientific norm.
Why do I click on the number 3 by mistake?
Because most digits need a response, clicking becomes quick and automatic. The 3 is rare, so it is easy to click before you notice it. Researchers call this a commission error, and it is a normal sign of automatic responding rather than a fault. Slowing down slightly usually helps.
Can this test diagnose ADHD or any other condition?
No. This attention span test is for education and entertainment and cannot diagnose ADHD or any other condition. If you are worried about your attention or concentration, please speak to a doctor or another qualified professional.
How can I improve my attention span?
Sleep well, reduce interruptions such as phone notifications, focus on one task at a time and take short breaks. Regular exercise and short daily practice with focus tasks may also help. Improvements on a test like this show you are getting better at the task, so treat any wider benefit as a bonus.
Can I take the attention span test on my phone?
Yes. Tap the screen for every digit except 3. On a computer you can click or press the space bar. Use the same device each time if you want to compare results.
Is the attention span test free?
Yes. It is completely free, needs no sign-up and runs in your browser. Your best score is saved only on your own device.
This attention span test is provided for education and entertainment. It is not a clinical or diagnostic tool. If you have concerns about your attention, concentration or memory, please speak to a qualified health professional.