Metronome & Instrument Tuner
Keep time and tune instruments in your browser.
Metronome
Set a tempo, choose the meter, then start. The first beat is accented.
100
BPM · Moderato
Tap at least twice in rhythm to detect BPM. Audio uses look-ahead scheduling to remain stable when the UI is busy.
Instrument tuner
Play one sustained note at a time in a quiet room. The needle shows whether it is flat or sharp.
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Waiting for a note…
Start the microphone and play a note
Standard guitar tuning
Detection range: 80–1200 Hz. Microphone audio stays in this browser tab and is never uploaded.
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