How the rhythm test works
A metronome plays at 100 beats a minute. For the first eight beats it plays at full volume and you tap along with it, using the space bar, a click or a tap on your phone. Then it fades out over four more beats. When it goes quiet, you keep tapping on your own for twelve beats, holding the tempo with nothing to follow but your own sense of time.
Your solo taps are what count. Each one is matched, in order, to the moment its beat would have landed if the metronome had kept going. The result shows every tap on a chart: above the line means you were late, trailing behind the beat; below it means you were early, leading ahead of it. You also see the tempo you actually kept, and how even your taps were.
This is a simple version of a task that researchers have used for decades to study timing, called synchronise then continue tapping. It is a good window into the internal clock that musicians, dancers and athletes rely on, and almost everyone finds out something about their own timing.
What counts as good timing
| Average distance from the beat | Standing |
|---|---|
| Under 25 ms | Metronome |
| 25 – 50 ms | Locked in |
| 50 – 90 ms | Steady |
| 90 – 150 ms | Drifting |
| Over 150 ms | Lost the beat |
The distance usually grows as the solo beats go on, because small errors add up. A drummer drifting by ten milliseconds a beat is a hundred milliseconds off after ten beats, so keeping each gap even matters more than any single tap. These ranges are a first estimate and will be refined as more people take the test.
How to keep a steadier beat
- Tap along properly first. The eight loud beats are your chance to lock the tempo in. Settle into them rather than waiting for the quiet part.
- Count in your head. Counting one, two, three, four through the fade gives your brain a pattern to keep running when the sound stops.
- Move with it. A small nod or foot tap on every beat helps many people hold a tempo better than the finger alone.
- Do not rush the silence. The most common mistake is speeding up once the beat is gone. If anything, think slightly slower.
- Use speakers or wired headphones. Bluetooth adds a delay that makes your taps look early.
If you like testing your sense of time, try the Hidden Clock, which asks you to stop a clock at ten seconds by feel, or the Reaction Time Test.
Frequently asked questions
What does the rhythm test measure?
It measures how well your internal clock keeps a tempo once the outside beat is gone. Tapping along with a beat you can hear is easy; holding the same tempo after it stops shows how steady your own sense of time is.
What does leading or trailing mean?
Leading means your taps landed before the beat, so you rushed. Trailing means they landed after it, so you dragged. The chart on the result shows every tap above or below the line so you can see which way you drifted.
Why do most people speed up?
Rushing is the most common pattern when people keep a beat on their own, especially at a moderate tempo like 100 beats a minute. Without the click to lean on, small early taps tend to compound into a faster tempo.
Do headphones matter?
Speakers or wired headphones are best. Bluetooth headphones delay the sound by a fraction of a second, and the browser cannot always correct for that, which would make your taps look early.
How is the score worked out?
Each of your twelve solo taps is matched in order to where its beat would have landed, and the score is the average distance in milliseconds. Lower is better, and a score under about 50 milliseconds is very steady.