Pitch Identifier
Sing or play a note and see what it is, live. Note name, frequency in hertz, and how many cents sharp or flat you are — a chromatic tuner that needs no install.
Cents from perfect pitch
Audio is analysed live in your browser and never recorded, stored or uploaded.
Who uses a live pitch identifier
Instrumentalists tuning up
A chromatic tuner that doesn't assume you're holding a guitar. Useful for anything without a dedicated tuner — brass, woodwind, a detuned string, or an instrument in a tuning your app doesn't have a preset for.
Singers checking their pitch
Knowing you're flat is one thing; knowing you're 22 cents flat on that particular note is something you can actually work on. The live meter makes the correction visible while you're still on the note.
Music teachers in a lesson
Putting the reading on screen turns a subjective correction into a shared observation. Students argue with 'that was sharp' and accept a needle sitting right of centre.
Anyone without a tuner to hand
It runs in a browser with no install and no account, which matters when you're at someone else's studio, a rehearsal room, or a venue with your phone and nothing else.
How to use it
1. Allow the microphone
Press start and grant mic access. Echo cancellation, noise suppression and auto gain are all switched off, because that processing helps speech but distorts pitch.
2. Play or sing one note
Hold it steady. The detector runs autocorrelation on every animation frame, so the readout follows you live rather than waiting for a recording to finish.
3. Read the meter
The needle sits centre when you're in tune. Left is flat, right is sharp, and the full width is one semitone — 50 cents either side.
Pitch identifier FAQ
Can I use this as a tuner?
Yes. It's a chromatic tuner — it identifies whichever note is closest rather than assuming a fixed instrument, so it works for guitar, bass, violin, wind instruments and voice alike. Tune until the marker sits centre and the reading turns to zero cents.
What are cents?
A cent is one hundredth of a semitone, the standard unit for describing how far off pitch something is. Under about 5 cents is imperceptible to most listeners and counts as in tune here. Around 20 cents starts to sound noticeably off, and 50 cents is halfway to the next note.
Is my microphone audio recorded or uploaded?
Neither. The stream is analysed frame by frame in your browser and discarded immediately — nothing is stored and nothing is sent anywhere. Stopping the tool releases the microphone and turns off your browser's recording indicator.
Why does the note jump around?
Background noise, room reverb, and instruments with strong overtones can pull the detector to a harmonic — usually an octave up or down. Get closer to the mic, play a clean sustained note, and reduce background sound. The readout is smoothed to keep small wobbles from twitching the display.
What note range does it detect?
Roughly 55 Hz (A1) to 1600 Hz (about G6), covering bass guitar through soprano voice and most lead instruments. Notes outside that band fall outside the search window and won't register.
It says microphone access was denied — what now?
Your browser blocked the request. Click the padlock or camera icon in the address bar, set the microphone permission for this site to Allow, then reload and press start again. Note that microphone access requires an HTTPS connection.
See your pitch in real time.
A chromatic tuner in the browser — no install, no sign-up.
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