Check reaction time online

Reaction Time Test

Check reaction time by clicking when the cue appears. Finish the set to get your average, best, median, consistency, history, and personal best across visual, audio, F1, aim, color, and pro modes.

Live stats
6 test modes
No signup needed

Space / Enter to play

Current—

Average—

Best—

Classic red-to-green simple reaction time.

Measurement notes

Fast timing, honest limits

This tool uses the browser's high-resolution clock. Your result still includes display, browser, operating-system, and input-device delay, so it is best used to compare repeated sessions on the same setup.

High-resolution timestampsEach valid response is measured with performance.now(), not a rounded wall-clock time.

Five attempts, not one guessAverage, median, best, worst, and consistency reveal more than a lucky single click.

No fake lab correctionThe raw browser result stays visible because hardware latency cannot be calibrated reliably from JavaScript alone.

Average Reaction Time · Reaction Time Score Comparison · Visual Reaction Time Test

How it works

Measure reflex speed without clutter

This reaction time test starts the timer when the cue appears and stops it on your click, tap, Space, or Enter press. A full set is averaged so one early hesitation or lucky guess does not dominate your result.

Simple stimulusOne cue, one response, clean timing.

False-start guardClicking before the cue cancels the attempt.

Local historyRecent scores stay in your browser for progress checks.

More than one test

Six ways to measure reaction time

Guides

Reaction Time Guides

Browse practical guides for understanding reaction time scores, improving reflex speed, and comparing visual, audio, F1, and gaming-focused test modes.

Average Reaction TimeUnderstand common ranges and what your browser-test score means.

Reaction Time Score ComparisonCompare fast, average, and slower scores with fair setup notes.

How to Improve Reaction TimeTrain with short practice sets, less device lag, and better focus.

Visual Reaction Time TestLearn how red-to-green reflex testing works and what affects it.

Audio Reaction Time TestCompare sound-based reflex timing with visual reaction scores.

F1 Reaction Time TestPractice start-light timing and avoid false starts.

Reaction Time for GamersSee how reflex speed fits into aim, attention, and game decisions.

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