Reaction Time Test & Aim Trainer
Two quick, fun checks of your click feel: a reaction timer that measures how fast your hand follows the screen, and a 30-second aim trainer that tracks accuracy and streak. Everything runs in your browser — the numbers stay on your device.
Reaction time
click the box the instant it turns greenA handful of rounds gives a fair median. Under 200 ms is elite territory; most adults sit between 200 and 300 ms. The random delay (1.5–4 s) stops you from pre-pressing.
Aim trainer
30 seconds · hit the target, miss and your streak resetsEach hit scores the time since the round started and moves the target; misses reset your streak. The run ends after 30 seconds — or early when you reach 30 hits.
How the reaction test works
Each round waits a random 1.5–4 seconds before the box turns green, so pre-pressing can never beat it. Click the instant it changes color and the page records the gap in milliseconds. Click too early and the round is void — you jumped the gun, which is exactly the failure the random delay exists to catch. The green moment is unpredictable by design; your only strategy is to watch and react.
The page keeps your last eight rounds and grades the median, not the best round. That choice is deliberate: the first click of a session is usually 30–60 ms slower than your real level, and one distracted click can add a hundred. The median throws away the noise and leaves the number you would produce most of the time.
What your reaction time means
Most adults sit between 200 and 300 ms. Under 200 ms is genuinely fast — the territory of practiced players — and roughly 150 ms is the physical limit of the fastest humans on this kind of task. Everything below 150 ms is either a lucky click or a bug in your timing, not skill. Where you land on that scale moves with sleep, caffeine, and how warm your hands are, so judge a session by its median, and a streak of sessions by the medians, not by one lucky round.
How the aim trainer works
A 30-second run with up to 30 targets, scored three ways: accuracy, average hit time, and streak. Accuracy and streak reward consistent aim — taking the half-second you need rather than spraying. Average hit time rewards speed. A high average hit time with high accuracy means you are aiming; a low one with low accuracy means you are clicking in the general direction and getting lucky. The fastest players score well on both, which is why the trainer shows both.
What this page can and cannot tell you
This page measures you, not your gear, so a slow score is not a hardware verdict. But if everything feels slow — reactions, aim, the whole machine — check the two usual suspects before blaming yourself: mouse polling rate and display latency. Run the mouse test to see the polling estimate, and test on a wired display with low response time if you can. A real input-chain problem shows up there, not in this timer.
Frequently asked questions
Does a fast reaction time mean my mouse is good?
Reaction time mostly measures you, not the mouse. A real hardware or driver delay would show up as a consistent few-millisecond penalty on every round, not as round-to-round variation. Treat this page as a warm-up and a fun benchmark, not a hardware test.
Why is my reaction time different every round?
Because the green light appears after a random 1.5–4 second delay, so pre-pressing never works. Expect 20–50 ms of natural spread between rounds; the median of several attempts is the number worth reading.
What is a good reaction time?
Most adults land between 200 and 300 ms. Under 200 ms is fast territory, and around 150 ms approaches the physical limit of the fastest esports players. Ten rounds of practice will tighten your own median noticeably.
Does the aim trainer share my scores?
No. Scores and reaction times are computed locally and never leave your browser — the same zero-upload rule as every test on this site.
I clicked too early and got 'Too early'. What happened?
You clicked while the box was still red, before the green appeared. The random delay makes pre-pressing an impossible bet: if you click during the waiting window the round is void and you start again. Relax, watch the box, and click only when it actually changes color.
Why does the aim trainer matter more than my raw reaction time?
Reaction time measures a single reflexive click; aiming adds movement, tracking and decision-making on top. In a real game it is the aim numbers — accuracy, average hit time, streak — that predict your results, not the isolated timer. Use them together: a fast timer with sloppy aim means you click early but not accurately.
Can I actually improve my reaction time?
Within limits. Expect about 20–50 ms of improvement from a few sessions of practice as your brain tunes the visual-to-motor pathway, plus another bump from warming up before a ranked session. Genetics and age set a floor — the fastest humans sit around 150 ms — so treat practice as tightening your own personal baseline, not chasing a leaderboard.
Should I buy a new mouse if my reaction time is slow?
Almost never on this evidence. Slow reaction that is consistent round after round can hint at input lag, but the usual culprits are display latency or an old mouse at a low polling rate, not the switch. Measure before spending: run the mouse double-click and polling test, and compare against a different display or cable. A bad mouse shows up there, not in this timer.