Pitch Detector Tools
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🎵 Pitch Detector

Real-time voice & pitch analyzer for musicians and vocalists

Get Started:

  1. Click the START button below
  2. Click "Allow" when asked about microphone access
  3. Sing or play a note into your microphone
  4. Watch the note appear on screen and on the piano keyboard
  5. The tuning meter shows if you're sharp (right), flat (left), or in tune (center)
--
-- Hz
-- cents

Piano Keyboard

Current Note
--
Frequency
-- Hz
Accuracy
--
⚠️ Microphone not detected. Please ensure your microphone is connected and you've granted permission in your browser settings.

How it works

Our free audio pitch analyzer gives you instant feedback by interpreting your microphone's input in real time.

  • 1.Click Start and allow microphone access.
  • 2.Sing or play a steady note; detection happens in real time.
  • 3.Read the note, exact frequency (Hz), and the ±cents meter.

Remember to use a quiet, echo-free room and hold a single, steady note for several seconds to get the most accurate and stable reading from the tool.

Accuracy & methodology

Our tool prioritizes stable, accurate readings. We use an autocorrelation algorithm to find the fundamental frequency, a method robust against overtones. The system intelligently handles different device sample rates for consistent results everywhere. A built-in noise gate automatically ignores quiet background sounds, so only your intended note is analyzed.

Best of all, every calculation happens directly on your device. This local, on-device processing means your audio is never uploaded, guaranteeing your privacy while providing instant, low-latency feedback.

Related Pitch Detection Tools

For a deeper explanation of pitch detection concepts, download our Pitch Detector Tools PDF guide .