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.
—
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.
About this tool
Keep visual tempo and tune instruments around an adjustable A4 reference. Free, private and browser-based. Metronome & Instrument Tuner runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.
What this tool does not do
- Metronome & Instrument Tuner is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.
How do I use this tool?
How do I use Metronome & Instrument Tuner?
Open Metronome & Instrument Tuner, enter or paste your input, and copy the result. The page works without an account.
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