Eighth-note practice
At 80 BPM with two clicks per beat, each click is 0.375 seconds apart. Four beats per bar still gives a three-second bar.
Current beat—
First beat has a higher click. Stop to change tempo or meter. Start with low device volume.
Ready. Audio starts only when you press Start.
Audio is scheduled ahead on the Web Audio clock; the visual beat may lag slightly with device latency. Beats are quarter notes even in six-beat bars.
Your inputs and generated files are processed locally in your browser. No input is uploaded to an audio or text-processing service.
How to use the Online Metronome
- 01
Set a quarter-note tempo and the number of beats in each bar.
- 02
Choose one, two, three, or four clicks per beat. Start at low device volume.
- 03
Press Start metronome. The first beat of each bar sounds higher; press Stop before adjusting settings.
Examples
Triplet subdivision
At 120 BPM, three clicks per beat divides each half-second quarter note into three equal parts. The tempo remains 120 quarter notes per minute.
Tempo and subdivision are separate
A quarter note lasts 60 divided by BPM seconds. Each subdivision divides that interval again. Choosing eighth notes doubles the click count without doubling the displayed beat tempo.
Accents help you hear the bar
Beat one uses a higher tone. Other main beats have a middle tone, while subdivisions use a lower, softer click. A six-beat setting means six quarter-note beats here; it does not automatically interpret compound 6/8 meter.
Scheduling and device latency
Clicks are scheduled slightly ahead against the Web Audio clock. Screen animation follows the audio clock but may lag the actual sound with output latency or busy browser work. Hiding the page stops playback, and each session is limited to ten minutes.
What to know
- Browser scheduling, device load, and audio output latency limit timing accuracy.
- 20–300 quarter-note BPM; 1–12 beats per bar; sessions stop after ten minutes.
Common questions
Can I use it offline?
After this tool and its scripts are loaded, its clicks require no network service. Reloading the site may still require a connection.
Why does it stop when I switch tabs?
The tool deliberately closes its audio context when the document becomes hidden. Return to this page and press Start to begin a new session.
Is there a microphone requirement?
No. Clicks are synthesized locally; no recording or microphone permission is needed.
Can I change tempo while it is playing?
Stop first, change the tempo or subdivisions, and start again. This keeps the chosen tempo consistent for each session.