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TrainingExit 13Ready now

Reaction time test

A check of your setup and your form, not a drill. Spot a slow screen or a tired evening.

How to use it

Rounds

0/5

Your 7-day average

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What this number really contains

Your time includes the wait for the next screen image (up to 16.7 ms at 60 Hz), your screen's own delay, then your input device and the browser. A controller is also polled once per image, 8.33 ms on average at 60 Hz. The stimulus is timed from the image where it is drawn, and your press from the event clock, but the delay of the screen itself cannot be seen from here.

That is why only a change on the same device means something.

Next step

Controller testerMeasure your stick drift, your real dead zone and your response curve with the Gamepad API, then set the game just above what you measured.

How to use it

Press as soon as the zone turns green. Two warm-up rounds do not count, then five rounds set your score: the median, so one lucky or missed round does not change it. A press before green cancels the round and is counted as a false start.

What the tests are for

Simple test: your raw reaction. Choice tests: a symbol appears and you press the matching button. The difference between both is your decision cost. It says more about a gunfight than your raw time.

How to read your number

We publish no target and no ranks, because no solid norm exists for a browser test. Compare yourself with yourself, same device, same input. If your result jumps more than 30 ms above your usual level, you are tired or something changed in your setup.

We found no study showing that a reaction test improves your play. Use this page as a check, then go and train something else: start with your screen settings if your screen has a game mode.

Questions and answers

What is a good reaction time?
We do not give a target. The range often quoted for adults is 200 to 300 ms, from secondary sources, and it does not include what your screen and browser add here. Your useful reference is your own usual level. Percentiles will appear once 300 players have posted with the same input.
Why does my score change between my phone and my computer?
Your screen, browser and input device all add delay. Studies of online tests report precision around 10 ms for most software, with a fixed extra delay of 25 to 45 ms. So a change on one device is reliable, a comparison between two devices is not.
Does it work with a PS5 or Xbox controller?
Yes. Connect your controller to your computer or phone by USB or Bluetooth, press a button once so the browser sees it, then use any button. Controller scores are kept apart from touch and mouse scores.
Can I train my reactions here?
Not really. No study we found shows a reaction test makes you better in a game. Practice may lower your score slightly on this test, nothing proves it carries over. It is a diagnostic tool.

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