Your microphone is not recorded
Live mode examines a short rolling signal in this browser. Stop the microphone or leave the page to end detection.
Online Pitch Detector & Note Finder
Sing, play one clear note or upload a recording to identify its note, octave, frequency and sharp-or-flat tuning in real time.
What note are you singing?
Sing, hum or play one clear note at a time.
Detected note—Sing or play one note
Ready when you are
Hold a steady tone for a clear reading.
−50 · FlatIn tuneSharp · +50
Your pitch, over time
Last 15 secondsNo recording. No audio upload.
Works best with one voice or instrument, without backing music. A4 = 440 Hz. Detection range: 65–1,400 Hz.
Free · No sign-up · Voice and instruments· Processed in your browser
How to Detect a Pitch Online
Start with a clean, single note. The detector does the measuring; you only need to choose the sound and read the result.
Start with one clear sound
Choose Microphone for a live voice or instrument, or switch to Upload audio for a recording. Reduce background music and play one note at a time.
Hold the note for a moment
Sing, hum or sustain the instrument note long enough for the detector to separate the fundamental pitch from breath, noise and overtones.
Read the note and tuning
Use the large note name first, then check the octave, frequency in hertz and cents meter to see whether the pitch is flat, sharp or near the center.
What Does the Pitch Reading Mean?
Read the large musical note first. The smaller values explain where that note sits and how close the sound is to its center.
- A4
- The nearest note and octave.
- 440 Hz
- The measured frequency of the sound.
- −12 cents
- Slightly below the nearest note, or flat.
“In tune” means close to the nearest note. It does not grade your melody, singing technique or instrument setup.
Nearest noteA4440.0 Hz
−2 centsIn tune
A♯4A4G♯4
Find Notes in a Voice, Instrument or Recording
The same detector supports three different starting points. Choose the one that matches the sound you already have.
Name the note you are singing
Hum a melody slowly or hold one lyric vowel. The detector connects the sound in your head with a musical note you can play or write down.
- 1
Start the microphone and sing one comfortable note
- 2
Hold it long enough for the reading to settle
- 3
Use the cents meter to notice flat or sharp movement
Detected noteA4440.0 HzIn tune
A♯4A4G♯4
Check one instrument note at a time
Pluck a guitar string, press a piano key or sustain a wind-instrument tone. The nearest note and tuning offset appear without choosing a target first.
- 1
Play a single note instead of a chord
- 2
Let the note ring while avoiding background sound
- 3
Compare the detected note with the one you intended
Detected noteE3164.5 Hz4 cents flat
A♯4A4G♯4
Follow pitch through a saved recording
Upload a clear voice or solo-instrument clip when the sound is not happening live. Playback keeps the current note aligned with its pitch curve.
- 1
Choose Upload audio and open a short recording
- 2
Press Play and move through the pitch history
- 3
Repeat a section when one phrase needs another listen
Detected noteG3196.2 Hz2 cents sharp
A♯4A4G♯4
Identify Pitch from an Audio File
A recording adds time to the result. Press Play to follow the current note, move through the pitch curve, or repeat a short section when one phrase needs closer listening.
- Use a clear vocal or one instrument playing at a time.
- Files can be up to 3 minutes and 50 MB.
- MP3, WAV, M4A, OGG, FLAC and WebM support varies by browser.
The original recording stays unchanged. Continue in Audio Editor when you want to trim or arrange it after checking the notes.
vocal-take.wav0:18
0:000:060:120:18
A♯4A4G♯4
Current noteG3
Frequency196.2 Hz
Tuning+2 cents
Choose the Right Pitch Tool
Several audio tasks use the word “pitch,” but they answer different questions. Start with the result you need.
| Tool | Use it when you need to | Result |
|---|---|---|
| Pitch Detector | Measure the sound happening now | Note, octave, Hz and cents |
| Note Finder | Name one sung or played pitch | The same live note reading |
| Vocal Pitch Monitor | Watch how a sung pitch moves over time | A recent vocal pitch trace |
| Song Key Finder | Analyze a complete mixed track | Overall musical key and BPM |
| Pitch Changer | Transpose an uploaded recording | A newly pitched audio file |
Accurate Enough to Learn from, Private by Design
Pitch detection depends on the clarity of the source. The page tells you what it can hear without sending that sound away.
Recordings stay on this device
Uploaded audio is decoded and analyzed locally. It is not stored automatically or attached to an account.
One clear note works best
The detector follows a dominant pitch from 65 to 1,400 Hz. Noise, chords and layered voices can create uncertain results.
Pitch Detector & Note Finder FAQs
Clear answers about notes, tuning, microphone access, audio files and the limits of single-pitch detection.
What note am I singing?
Choose Microphone, click Start microphone and allow access. Sing or hum one steady note. The pitch detector shows the nearest musical note and octave, such as A3 or C-sharp 4, plus the frequency and tuning offset.
Can this identify notes from an instrument?
Yes. Play one clear guitar string, piano key, flute tone or other sustained note at a time. Chords and layered sounds contain several pitches, so the reading may jump between overtones.
Can I detect pitch from an audio file?
Yes. Switch to Upload audio and open a clear vocal or single-instrument recording. Play the file to follow its note names and pitch curve, or repeat a short section for closer listening.
What do note, octave, Hz and cents mean?
The letter names the nearest musical note, the number identifies its octave, hertz measures the detected frequency and cents shows the small distance from the center of that note. Negative cents are flat and positive cents are sharp.
Is a pitch detector the same as a note finder or tuner?
Pitch detector and note finder usually describe the same job: naming the sound that is currently heard. A tuner uses that reading to help you reach a known target note. This page identifies the current note without assuming a target.
Can it detect chords or a song's key?
No. This detector follows one dominant pitch at a time. Use Song Key and BPM Finder for the overall key and tempo of a mixed song. Chords, drums and layered vocals can make a single-note reading unstable.
View all 10 questionsShow fewer questions
Why does the pitch jump or disappear?
Breathy sound, a very quiet signal, background noise, vibrato, strong overtones or several notes at once can make the fundamental pitch unclear. Move closer to the microphone and hold one comfortable note.
Is my microphone recorded or uploaded?
No. Microphone mode analyzes a short rolling signal in your browser and does not create a recording. Uploaded files are also analyzed on this device and are not saved automatically.
Does the pitch detector work on mobile?
Yes, in modern mobile browsers that support microphone access and Web Audio. Open this page directly in the browser, allow microphone permission and keep the page visible while checking a note.
Can this tool correct or change pitch?
No. It measures pitch but does not retune the sound. Use Pitch Changer when you want to transpose an uploaded recording, or continue into Audio Editor for trimming and other edits.