Syed Waleed

Click when the screen turns green and measure your reflexes over 5 trials. Free, no signup.

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Reaction Time Test — How Fast Are Your Reflexes?

Click when the screen turns green — not before. Five trials, false-start detection, and your true average reaction time in milliseconds, measured right in your browser.

Trial 0 of 5 completed
Click to start the test
When the box turns green, click as fast as you can. Clicking while it is red is a false start.

Your trials

TrialResult
Average
0 ms
Best
0 ms
Trials
5
Informal rating scale: under 200 ms — excellent; 200–250 ms — good; 251–300 ms — average; 301–400 ms — below average; over 400 ms — slow. These bands are informal benchmarks, not medical or professional measurements. Most adults land between 200 and 300 ms.
100% private

Your reaction times are measured on your device only. Nothing is uploaded, stored, or shared.

No signup

No account, no email, no app. Click and test as many times as you like.

Free forever

Unlimited reaction time tests with 5-trial averaging — free, no limits.

How to use the reaction time test

  1. 1Click to start

    Click the box to begin. It turns red — that is the waiting phase, so do not click yet.

  2. 2Wait for green

    After a random 2–5 second wait, the box turns green. That is your signal.

  3. 3Click as fast as you can

    Click the instant you see green. Your time for that trial is recorded in milliseconds.

  4. 4Finish all 5 trials

    Repeat for 5 trials to get your average, your best time, and an informal rating. False starts are discarded and retried.

Why this reaction test is worth taking

5-trial average, not one lucky click

A single trial is noisy. Five trials smooth out lucky guesses and slow blinks into a number you can trust.

Real false-start detection

Clicking during the red waiting phase is caught and the trial is retried — you cannot game the test by clicking early.

Random wait every trial

The wait is a random 2–5 seconds, so you cannot learn the rhythm and anticipate the green signal.

Millisecond precision

Timing uses your browser's high-resolution clock, so results are accurate to the millisecond, not rounded to a frame.

See every trial

Each trial is listed in a table as you go, so you can spot your fastest and slowest reactions at a glance.

Works on phone and desktop

Tap on a touchscreen or click with a mouse — the test is fully responsive and touch-friendly.

Reaction time test FAQs

What is a good reaction time?
For most adults, a visual reaction time between 200 and 300 milliseconds is typical. Under 200 ms is excellent and common among competitive gamers and athletes. Over 400 ms is slower than average but still normal if you are tired, older, or on a laggy device.
Why does the test use 5 trials?
Reaction time varies from moment to moment — one trial can be a fluke. Averaging 5 trials cancels out lucky clicks and slow blinks, giving a much more reliable picture of your real speed.
What counts as a false start?
Clicking or tapping while the box is red, before it turns green. The trial is discarded and does not count toward your 5 trials, so false starts never hurt your average — they just make you retry that trial.
Why is the wait random?
If the wait were always the same length, you could learn to click on rhythm instead of reacting to the green signal. A random 2–5 second wait keeps every trial a genuine reaction, not a prediction.
Are phone results comparable to desktop results?
Touchscreens add a small amount of input lag compared to a mouse, so phone times often run 10–30 ms slower. For the fairest comparison with friends, test on the same type of device.
Can I improve my reaction time?
Yes, to a point. Good sleep, regular practice with fast-paced games, and staying alert all help. Most of your baseline speed is genetic, but practice typically trims 10–30 ms off an untrained score.
Is this test medically accurate?
No. This is an informal reflex test for fun and self-tracking, not a medical or professional assessment. If you notice a sudden change in your reflexes, talk to a doctor.

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