Free Online Pitch Detector
Identify musical notes, frequencies, and tuning accuracy in real-time using your microphone. Works with any instrument or voice.
How It Works
Allow Microphone
Click start and grant microphone access. Your audio stays in your browser.
Play or Sing
Play your instrument, sing, or hum. The detector picks up any pitched sound.
See the Note
Instantly see the detected note, frequency in Hz, and how many cents sharp or flat.
Why Use a Pitch Detector?
A pitch detector listens to sound and tells you exactly what note is being played. Unlike a tuner which targets specific notes, a pitch detector identifies any pitch across the full musical range.
Ear Training
Verify what note you're hearing or singing
Any Instrument
Works with guitar, piano, voice, violin, flute, and more
Tuning Accuracy
See exactly how many cents sharp or flat a note is
Voice Analysis
Check your vocal pitch for singing practice
Instant feedback
C0 to B8 range
Cents accuracy
Audio stays local