Free Online Pitch Detector
Sing or hum any note and watch it appear in real time: the note name, how many cents sharp or flat you are, and a live trace of your pitch. No account, no download, nothing recorded. Press start and sing.
Tap to allow microphone access and start detecting.
Everything runs in your browser. Nothing is recorded or uploaded.
How to use the pitch detector
Tap start and allow the mic. Everything runs locally in your browser.
A steady “ahh” or a closed-lips hum both work. The big readout shows the note you are hitting.
The tick shows how far you sit from the nearest note. Inside the cyan zone means you are within 10 cents, effectively in tune.
A vocal pitch monitor for real practice
Used as a vocal pitch monitor, the live trace is the useful part: hold a note and watch the line stay level, slide between notes and watch the glide, or zoom in on your vibrato. Singers use it to check intonation on sustained notes, find a starting note before karaoke, match pitch with a recording, and warm up with sirens while watching the line sweep up and down.
One note is a reading. Your range is the answer.
A pitch detector tells you what note you are singing right now. The more useful question is what your voice can do across its whole range, and which songs actually fit it. HumMatch’s free vocal range test takes about 30 seconds: three guided hums, then you get your exact range, your voice type, and every one of 40,000+ songs ranked by how singable it is for your voice.
Pitch detector FAQ
A pitch detector listens to your voice through the microphone and tells you which musical note you are producing, in real time. HumMatch’s detector also shows how many cents sharp or flat you are from the nearest note, so you can see your intonation, not just the note name.
Yes. The pitch detector runs entirely in your browser, needs no account and no download, and nothing you sing is recorded or uploaded. It is free because it is the front door to HumMatch’s vocal range test and song matching.
The detector uses the same real-time pitch engine as HumMatch’s vocal range test: a McLeod/YIN-family detector reading your microphone about 45 times per second, with a clarity gate that ignores noise and rumble. For a clean sustained tone it resolves well under a semitone, which is why it can show cents.
Singers use it to check intonation on sustained notes, practice sliding between pitches, warm up before karaoke, find a starting note, or watch vibrato on the live trace. It also answers the simple question: what note am I singing right now?
The pitch detector shows one note at a time. To map your full range, take the free 30-second vocal range test: three guided hums, then HumMatch measures your lowest and highest comfortable note, names your voice type, and ranks 40,000+ songs by how singable each one is for your voice.