Pitch Detector: See the Exact Note You're Singing, Live
This free pitch detector runs in your browser. Sing or hum into your mic and a live dial names the note, then shows how many cents sharp or flat you are, updating in real time. Nothing is recorded or uploaded.
Your browser will ask to use your microphone.
Your audio is analyzed in your browser and never uploaded. No account needed.
What Is a Pitch Detector?
A pitch detector is a tool that listens through your microphone and names the exact musical note your voice or instrument is producing, then shows how sharp or flat that note is in cents. SingTest reads your pitch many times a second and moves a live dial across the range from A2 up past C6, with A4 sitting at 440 Hz.
One semitone spans 100 cents, and most trained ears begin to notice a note is off at around 10 cents. A pitch detector puts that precision on screen, so instead of guessing whether you landed the note, you watch the needle settle on it.
Live note readout
The pitch detector prints the note you are on right now, from A2 to C6, and updates the instant your voice changes.
Cents offset dial
The pitch detector needle shows how sharp or flat you are, from -50 to +50 cents, so you can nudge your voice back to center.
Voice or instrument
Sing, hum, whistle, or play a guitar into the mic. The pitch detector reads any clear tone the same way.
Real-time response
No record button and no waiting. The pitch detector tracks your voice as you hold and slide between notes.
Private by design
Audio is analyzed inside your browser. Nothing is recorded or uploaded to a server.
Free, no signup
Open the pitch detector, allow the mic, and start. No account, no download.
See the Exact Note and How Far Off You Are
The pitch detector names your note and marks it sharp or flat in real time. Hold a steady tone and watch the reading lock in; slide up and it follows you note by note.
This is the fast way to answer 'what note am I singing' with no piano nearby. The pitch detector does the naming for you.
A Pitch Detector That Doubles as a Tuner
Play a guitar string or hum a target note, and the pitch detector reads the cents offset straight off the dial. When the needle sits at zero, you are in tune.
Singers use the same pitch detector to hold long notes on pitch and to check whether they drift sharp on high notes or flat on low ones.
How the Pitch Detector Works
Allow your microphone
Open the pitch detector and click allow when your browser asks for mic access. No account, no download.
Sing, hum, or play
Make any clear, steady tone. The dial names the note and shows your pitch within a fraction of a second.
Read the cents
Watch the needle. Above zero is sharp and below zero is flat; dead center means you nailed the note.
Adjust and hold
Nudge your voice until the needle centers, then hold it there. Use the pitch detector as long as you like.
When You'll Reach for It
Practicing pitch
Match notes and watch the pitch detector confirm each one, so you train your ear and your voice together.
Tuning an instrument
No clip-on tuner handy? A browser pitch detector reads a guitar or ukulele straight from the mic.
Settling a question
Wondering what note is this? Hum it into the pitch detector and read the name off the dial.
Warming up to sing
Run through your range and use the pitch detector to keep every note centered before you perform.
Pitch Detector FAQ
Is the pitch detector free?
Yes. The pitch detector is completely free, with no account and no credit card. Open the page, allow your microphone, and start. You can use it as often and as long as you want.
How accurate is a browser pitch detector?
Pitch detection in a modern browser is accurate to within a few cents, finer than the roughly 10-cent difference most ears can hear. A browser pitch detector reflects real measurement of your voice. Use headphones and a quiet room for the cleanest result.
What note am I singing right now?
Sing or hum into the mic and the dial names it, anywhere from A2 to C6. That is the whole point of a pitch detector: it turns the sound in your throat into a note name in under a second.
Can I use the pitch detector to tune my voice or instrument?
Yes. Read the cents offset and adjust until the needle sits at zero. Singers use the pitch detector to check drift, and players tune an acoustic guitar or ukulele the same way, all from the microphone.
What do sharp and flat mean on the dial?
Sharp means your note sits above the target and flat means below. The pitch detector shows the gap in cents, where 100 cents is one semitone, so a reading of +20 means you are a fifth of a semitone too high.
Do I have to sing, or can I hum?
Either works. The pitch detector reads any clear tone, so a hum, a sung vowel, a whistle, or a plucked string all register. Steady tones read most cleanly.
Is my voice recorded or uploaded?
No. The pitch detector analyzes your microphone signal inside your browser and discards it in real time. Nothing is recorded or uploaded, and no audio ever reaches a server.
How is this different from a note finder or a plain tuner?
A basic tuner only tells you sharp or flat against one target. This pitch detector names the note across your whole range and shows the exact cents at the same time, so it works as a note finder, a voice pitch analyzer, and a tuner in one.
Ready to Read Your Exact Pitch?
Sing or hum and the free pitch detector names the note and its cents offset live, right in your browser. No signup, nothing uploaded.