Pitch Detector
Detect pitch from your microphone in real time. See the musical note, frequency in Hz, cents offset, and a live pitch curve without uploading audio.
Audio stays on your device. Use a quiet room and hold one steady note for the most useful result.
Pitch history
Recent stable pitch frames from the current session.
Better results
- Hold one steady sound for one to two seconds.
- Avoid chords, backing tracks, and overlapping voices.
- Use a quiet room and keep the microphone close.
How to use this online pitch detector
The tool listens to your microphone locally and estimates the fundamental frequency of a steady single sound.
Allow microphone access
Click Start Detection and allow microphone access in your browser. The pitch detector works in the page and does not upload your audio.
Make one steady sound
Sing, speak, hum, or play a single note. Avoid backing tracks, chords, and loud room noise while the detector is listening.
Read note, Hz, and cents
Use the note name for quick recognition, frequency for exact pitch, and cents to see whether the sound is flat, in tune, or sharp.
Built for quick pitch checks
This page is designed as a practical pitch monitor, voice pitch analyzer, audio pitch detector, and lightweight online tuner for single notes.
Voice pitch analyzer
Check the approximate pitch of a spoken or sung voice without installing an app or uploading a recording.
Singing pitch detector
Hold a note and watch whether it lands flat, sharp, or near the target pitch. The curve helps you see stability over time.
Audio pitch detector
Use the same real-time detector for simple instrument tones, tuning checks, and quick frequency inspection.
No upload required
The microphone stream is processed in your browser. VoiceCleaner does not need to receive or store the audio for this tool.
Cents offset
The cents meter explains how far the detected pitch is from the nearest musical note, which is more useful than a note label alone.
Live pitch history
A short pitch curve makes the page more useful for repeated checks and helps explain why unstable sounds produce changing results.
Accuracy, privacy, and limits
A browser pitch detector is best for steady single sounds. It is not meant to identify every note in a full mix or replace professional tuning tools for complex audio.
Works best with single notes
A clean voice tone, hum, whistle, or single instrument note gives better results than chords, accompaniment, or noisy rooms.
Local microphone processing
The page uses Web Audio in the browser, so the first version does not need an API call, upload queue, or server-side audio processing.
Results can move
Human voice naturally wobbles, and phones apply microphone processing. The curve and confidence score help explain those changes.
Pitch detector FAQ
Short answers about microphone privacy, pitch accuracy, voice analysis, and cents.
Want to test your full singing range?
Use the vocal range test to capture your lowest and highest comfortable notes, then get an approximate voice type.