Start without guessing.
Press Start test and wait through the randomized pause. The field stays dark while the signal is prepared. Clicking before the change counts as an early click, so anticipation cannot masquerade as reaction speed.
Browser reaction benchmark
Reaction time test for a cleaner baseline.
Run five randomized visual-signal rounds, then inspect your median, P95, consistency and early clicks. This online reaction time test is designed for repeatable self-comparisons, not a leaderboard or an official performance rating.
01 / reaction time test
Run the online reaction time test
Ready for a clean run
Visual response drill
Wait for the field to turn chartreuse, then click once. Early clicks remain visible as errors.
REACTION / READY
Wait for the signal.
Click start, then click the stage as soon as it turns chartreuse.
02 / results
Read your reaction time result
Use the median as the main comparison point. P95 shows the slow tail, consistency shows spread, and accuracy makes early clicks visible.
No completed run yet.
Finish five rounds above to populate this panel with a real browser measurement.
Median--ms
P95--ms
Consistency--ms spread
Accuracy--percent
Trial trace
Round detail
Exact values are also listed in the table below.
Read the result
Keep the signal honest.
A completed run will explain what this metric says and what it does not say.
Browser timing includes display, OS and input-path effects.
| Date | Median | Accuracy | P95 |
|---|
03 / how it works
How to use this reaction time test
A useful reaction speed test is a controlled comparison. Keep your device, browser and posture stable, then judge the run as a set rather than chasing one unusually fast click.
Click the signal once.
When the field turns chartreuse, click anywhere in the work area. The timer begins at the visual change and ends at your pointer response. Five rounds create a small personal sample without turning the test into a fatigue exercise.
Compare the whole trace.
After the fifth round, use median, P95, consistency and accuracy together. A fast median with more early clicks is a different result from a slightly slower run with a tighter spread.
A clean comparison session
Remove noise from your baseline.
Short sessions are easier to repeat. If you are checking a monitor, browser or FPS warm-up change, change one variable at a time and keep a note of the setup.
- 01
Use the same display, browser and pointer.
- 02
Close tabs or apps that may steal focus.
- 03
Run one warm-up before recording a comparison.
- 04
Compare median, P95, spread and early clicks.
Example. If your median falls from 250 ms to 225 ms but P95 rises and accuracy drops, you may be rushing or anticipating. If the median and P95 both move down while accuracy stays at 100%, the change is a cleaner personal baseline. Neither result is an official rank or a guarantee of in-game performance.
04 / measurement
What the result can tell you
This tool measures a narrow visual-to-click task. It is useful for a repeatable baseline, but it should not be treated as a full reflex, latency or skill assessment.
Typical response
The median is the middle valid round after sorting. It is less sensitive than an average to one slow interruption, so it is a practical number for comparing your own sessions.
Slow-tail response
P95 shows how slow the upper end of the run became. A wide gap between median and P95 can point to hesitation, focus changes, fatigue or an inconsistent setup.
Response discipline
Accuracy reflects valid responses out of five rounds. Early clicks remain an explicit error signal so a low number produced by guessing is easier to spot.
Scope note. A browser reaction time test includes display refresh, browser scheduling, operating-system load, pointer hardware and human anticipation. It is not a calibrated mouse-latency test, monitor-latency test, medical measurement, anti-cheat diagnostic or population leaderboard.
05 / interpretation
Why your reaction time changes
The same person can produce different scores across a day. Treat changes as clues about the test conditions and your current state, not as a permanent label.
Screen and input path matter.
Refresh behavior, browser load, pointer hardware and the distance between hand and button can change a browser measurement. Keep the same setup when the goal is comparison, and do not compare two devices as if they were one instrument.
Warm-up can lower the score.
Familiarity, attention, sleep and anticipation all affect a response. A short warm-up may make the task feel easier, while repeated attempts can also teach you to predict the timing. That is why randomized pauses and error counts matter.
Choose the right comparison.
Use this page for a general online reaction time test or a simple FPS reaction baseline. For CS2-specific target acquisition, use the CS2 aim trainer; for the full reaction, flick and tracking lab, return to the CS2 reaction test.
Your recent results are stored locally when the browser allows local storage. No account is needed. Clearing site data, using a private window or blocking storage can remove or prevent the local history. Read the privacy policy for advertising and data disclosures, and the terms and disclaimer for use boundaries.
06 / faq
Reaction time test FAQ
What is a good reaction time?
There is no universal cutoff for an online reaction time test. Use the same browser and device, compare the median across several short sessions, and treat the result as a personal baseline rather than an official ranking or a promise about game performance.
How does this online reaction time test work?
The test waits a randomized interval, changes the field to a response signal, and measures the time between that change and your click. Five rounds are summarized with median, P95, consistency, accuracy and early clicks.
Are reaction time tests accurate?
They are useful for comparing your own setup, but a browser result also includes display, operating-system, browser and input-path effects. It is not a calibrated mouse or monitor latency instrument, so do not treat a single number as a laboratory measurement.
Do reaction time tests improve reaction time?
Repeating a test can improve familiarity and anticipation, so a lower score is not automatically a permanent skill improvement. Use short, consistent sessions, keep the setup stable and compare the full trace rather than the fastest click.
Can I use this as an FPS reaction time test?
Yes. It can provide a simple visual-to-click baseline for FPS practice, including a CS2 warm-up comparison. It does not predict an in-game rank or measure crosshair placement, movement, recoil control, peeking, aim transfer or network latency.
Why is my reaction speed test result different on another device?
Displays, browser scheduling, operating-system load, pointer hardware and input paths differ between devices. Compare results only when the main setup is stable, and record any hardware or browser change beside the run.
How often should I check my reaction time?
One warm-up followed by two recorded sessions is a reasonable starting protocol when comparing a change. Constant retesting adds fatigue and anticipation, so leave enough time between comparisons to keep the result meaningful.