Note detection
See the nearest note name, octave, measured frequency, and cents offset from equal temperament.
Tuning utility
Online pitch detector
Use your microphone to estimate the dominant musical note and frequency. The tool is useful for quick tuning checks, teaching, and understanding pitch.
Privacy first
The analysis runs locally with the Web Audio API and does not upload microphone audio.
Best results
Use a clear single note, reduce background noise, and hold the sound steady near the microphone.