PitchDetector.com has 34 free music tools that run in your browser: a live pitch detector, instrument tuners, vocal range and voice type tests, frequency tools, a metronome and BPM finder, key and chord finders, and ear training. No download and no sign-up.
✓ 100% free✓ No sign-up✓ Phone and desktop✓ Audio stays on your device
Pitch and note tools
Find the note of any sound, live or from a recording.
Pitch Detector
Live note, Hz and cents with a pitch graph and a 61-key piano. Also reads MP3, WAV and M4A files.Open Pitch Detector → MicNote Finder
Shows each note on treble and bass clef and a piano, and writes a played melody down in order.Open Note Finder → FileAudio File Pitch DetectorNew
Upload MP3, WAV, M4A, OGG or FLAC and get a pitch curve plus a note list with start time and cents.Open Audio File Pitch Detector → Mic or filePitch to MIDI Converter
Turn a sung or played melody into a MIDI file with a live piano roll you can check first.Open Pitch to MIDI Converter → FilePitch Shifter
Change the key of a song up or down without changing its speed, then save it as WAV.Open Pitch Shifter →Singing and voice tools
Test your range, voice type and pitch accuracy.
Vocal Range Test
Sing from your lowest to highest note. Only steady notes count, and you get your range with a voice-type chart.Open Vocal Range Test → MicVoice Type TestNew
Combines range, comfortable zone and speaking pitch to match you to soprano, alto, tenor, baritone or bass.Open Voice Type Test → MicSinging Note Detector
What note am I singing? Hold a note for a second: it names it, rates how steady you were and plays it back.Open Singing Note Detector → MicVoice Pitch Analyzer
A live pitch line on piano lanes that tells you if you are steady, sliding or using vibrato.Open Voice Pitch Analyzer → MicVoice Hz TestNew
Read a short passage and see your average speaking pitch in Hz, the nearest note and your pitch variation.Open Voice Hz Test → MicPitch Accuracy Checker
Sing target notes and get a score report per note, plus a fine-pitch ear test that adapts to you.Open Pitch Accuracy Checker → MicPitch Matching Game
Hear a note, sing it back and score points. Four modes and three difficulty levels down to ±10 cents.Open Pitch Matching Game →Instrument tuners
Tune by microphone, with a mode made for your instrument.
Instrument TunerNew
One tuner for 34 instruments: guitar, bass, brass, woodwind and strings, with transposing and low-note modes.Open Instrument Tuner → MicGuitar Tuner
Headstock view with string lights, automatic string detection and 11 tunings including Drop D and 12-string.Open Guitar Tuner → MicUkulele Tuner
Soprano, concert, tenor and baritone ukulele with High G, Low G, D and DGBE tunings.Open Ukulele Tuner → MicViolin Tuner
Finds the string you play and tells you when to use the peg or the fine tuner. Viola tuning too.Open Violin Tuner → MicChromatic Tuner
Strobe-style display for any note A0 to B7, cents to 0.1 and adjustable A4 from 415 to 466 Hz.Open Chromatic Tuner →Frequency and audio tools
Measure, convert and generate frequencies, and check your gear.
Frequency Detector
The frequency of any sound in Hz, its nearest note and cents, with a live spectrum from 20 Hz to 20 kHz.Open Frequency Detector → Mic or fileSpectrogram Viewer
See sound as a picture over time, with a cursor readout, mel scale and several colour maps.Open Spectrogram Viewer → No micFrequency to Note Converter
Type any Hz value to get the note, octave, cents, MIDI number and piano key.Open Frequency to Note Converter → No micNote to Frequency Converter
Any note to Hz at A4 = 440, 432, 442, 415 Hz or your own tuning, in every octave.Open Note to Frequency Converter → No micTone GeneratorNew
Play any frequency from 1 to 20,000 Hz: four waveforms, up to three tones, sweeps and a left/right test.Open Tone Generator → HeadphonesHearing TestNew
Find the highest and lowest frequency you can hear in each ear, with a typical-by-age guide.Open Hearing Test → MicMic TestNew
One-click check that your microphone works: level, clipping, noise, record and play back, and fixes.Open Mic Test →Rhythm and tempo tools
Keep time and find the BPM of any song.
Online Metronome
Steady click from 20 to 300 BPM with accents, custom time signatures and a speed trainer.Open Online Metronome → TapTempo Tapper
Tap along to find the BPM. Stray taps are ignored, and you can open the result in the metronome.Open Tempo Tapper → Mic or fileBPM Detector
Detect the tempo of a song file or live music to 0.1 BPM, with a beat grid and confidence meter.Open BPM Detector →Music theory and ear training
Keys, scales, chords and ear tests.
Song Key Finder
The key of a song with Camelot and Open Key codes, its scale and chords, and key changes over time.Open Song Key Finder → Keys or micScale Finder
Enter notes or chords and see which of 43 scale types in 12 keys fit, exact matches first.Open Scale Finder → Mic or fileChord Progression Finder
Find the chords of a song from audio, with a synced chord lane, Roman numerals and a capo tip.Open Chord Progression Finder → No micChord Progression Analyzer
Type chords to see the key, Roman numerals, borrowed chords and cadences, then play or transpose.Open Chord Progression Analyzer → ListenInterval Ear Training
Name and sing intervals up to two octaves, with a quiz that drills your weakest intervals.Open Interval Ear Training → ListenPerfect Pitch TestNew
Name random notes with no reference tone to see if you have absolute pitch.Open Perfect Pitch Test → ListenTone Deaf TestNew
24 same-or-different melody pairs plus a higher-or-lower test, with a friendly result.Open Tone Deaf Test →Which tool should I use?
Pick what you want to do. The tool is in the section linked on the right.
| I want to… | Use | Section |
|---|---|---|
| Find the note I am singing or playing | Pitch Detector or Singing Note Detector | Pitch and note tools |
| Find my vocal range or voice type | Vocal Range Test, then Voice Type Test | Singing and voice tools |
| Sing more in tune | Pitch Matching Game and Pitch Accuracy Checker | Singing and voice tools |
| Tune my guitar, ukulele or violin | The tuner for your instrument, or Instrument Tuner for any other | Instrument tuners |
| Know the Hz of a sound | Frequency Detector | Frequency and audio tools |
| Check my microphone first | Mic Test | Frequency and audio tools |
| Find the BPM or key of a song | BPM Detector and Song Key Finder | Rhythm and tempo tools |
| Train my ear | Interval Ear Training, then the Perfect Pitch and Tone Deaf tests | Music theory and ear training |
How our tools work
Every tool runs inside your browser with the Web Audio API. When a tool uses your microphone or a file, the sound is analysed on your own phone or computer and is not uploaded. The pitch tools share one tested detection engine (the McLeod pitch method), so a note reads the same in the tuner, the vocal range test and the pitch detector. You can read how we test accuracy in our methodology, see how real-time pitch detection works, and follow every update in the changelog.
For the best reading, use a quiet room, sing or play one note at a time and keep the microphone about 20 to 30 cm away. If a tool cannot hear you, allow microphone access in the browser bar or see troubleshooting.
Learn more with our guides
Want to understand the result, not just see it? Start with a guide.
Frequently asked questions
Are these music tools really free?
Yes. All 34 tools are free to use with no sign-up, no trial and no limit on how often you use them.
Do the tools work on iPhone and Android?
Yes. They work in current versions of Chrome, Safari, Edge and Firefox on phones, tablets and computers. The first time a tool needs the microphone, your browser asks for permission; tap Allow.
Is my voice or audio uploaded?
No. Microphone sound and the files you open are analysed on your own device and are not sent to our server. When a tool lets you record a take to play back, that recording stays in your browser.
What is the difference between a pitch detector and a tuner?
A pitch detector tells you which note you are singing or playing and shows how the pitch moves over time. A tuner is made for adjusting an instrument: it knows the target strings or notes and tells you whether to tune up or down.
Why does the note sometimes jump an octave?
Musical sounds contain overtones as well as the main note. With a weak, breathy or noisy sound, a detector can lock onto an overtone for a moment. Sing or play one clear, steady note in a quiet room and the reading settles.
What is the difference between BPM Detector and Tempo Tapper?
BPM Detector listens to a song or file and finds the beat for you. Tempo Tapper measures the tempo from your own taps, which is handy when the song is playing in another app or only in your head. Both can show half or double time, so check the result against the beat you feel.
Does a vocal range result tell me my voice type?
Not on its own. Range shows the notes you reached today. Voice type also depends on where your voice feels comfortable, its tone and where it changes register, which is why the Voice Type Test combines several measurements.