Microphone Pitch Detector
Detect the pitch of a sound from your microphone in real time.
What note am I hearing
This listens through your microphone and identifies the pitch of the sound it hears, showing the nearest note in real time. It is useful for tuning instruments, checking a sung note, or seeing the pitch of any sound, all processed locally in your browser.
Allow microphone access and make a sound to detect its pitch.
How pitch detection helps, and privacy
Real-time pitch detection is what an instrument tuner does: it measures the frequency of the incoming sound and shows the nearest note and whether it is sharp or flat, so you can adjust until it is in tune. Beyond tuning, it lets singers check whether they are hitting a note, helps identify the pitch of a sound, and is a useful ear-training aid, giving instant feedback on the pitch you produce. Because it responds live, you can watch the detected note change as you play or sing, which makes it immediate and interactive. An important reassurance on privacy: the microphone audio is analysed entirely in your browser to detect the pitch, and is not recorded or sent anywhere, so nothing you play or sing leaves your device. You will need to grant microphone permission for it to listen, but the sound is processed locally and discarded, making it a private way to get real-time pitch feedback for tuning and practice.
Frequently asked questions
What is microphone pitch detection for?
Tuning instruments, checking a sung note, or identifying the pitch of a sound — it shows the nearest note and whether it is sharp or flat in real time.
Is my microphone audio recorded or sent anywhere?
No — the audio is analysed in your browser to detect the pitch and is not recorded or transmitted, so nothing you play or sing leaves your device.
Why does it need microphone permission?
To listen to the sound and detect its pitch — but the audio is processed locally and discarded, not stored or uploaded.