A pitch changer moves the notes of a song, voice or instrument higher or lower without changing its speed. Open an audio file or a video below, shift it by semitones (up to 24 either way), see the new key, change the tempo separately if you need to, compare before and after, and download MP3 or WAV.
This online pitch changer is free, needs no sign-up and runs in your browser, so nothing is uploaded.
Change the Pitch of Any Song Online
Open a song, shift the pitch, change the tempo if you want, compare, then download.
Processed in your browser. Nothing is uploaded.
Start with Step 1: choose a song from your device.
Key and file
- Length
- –
- Format
- –
- File
- –
Open a song to listen to it here.
The waveform of your song appears here
Step 2 Pitch and tempo
More options cents fine-tune, formant preserve, auto key-detect, video audio
Which tool do you need?
This pitch changer handles most jobs. For these six, a dedicated tool is faster:
How to change the pitch of a song online
- Open your file. Drop it on the tool or tap to choose it: MP3, WAV, M4A, OGG or FLAC, or an MP4 or MOV video, whose sound is used. The tool detects the original key so it can name the new one.
- Set the pitch. Move the pitch control up or down, from −24 to +24 semitones. The label shows the result as you go, for example “C → D (+2 semitones)”.
- Keep or change the tempo. The tempo stays at 100 % unless you move it. Anywhere from 25 % to 400 % changes the speed without touching the pitch.
- Compare. Press play and switch between Before and After to hear the original and the new version.
- Download. Choose MP3 or WAV. The file name records the change, for example song_D-major_+2st.mp3, so versions never get mixed up.
More options adds fine-tuning in cents, for tracks tuned between two notes (432 Hz sits 31.77 cents below the 440 Hz standard) or to detune on purpose, plus formant preservation for voices, automatic key detection when a file opens, and the switch that uses the sound of a video.
What is a pitch changer?
A pitch changer is a tool for pitch shifting: it multiplies every frequency in a recording by the same ratio, so the whole song moves to a new key while its rhythm and length stay the same. Transposing audio means the same thing. Audio pitch changer, song or music pitch changer, pitch adjuster, pitch editor, pitch converter and “audio pitcher” are all names for this one job.
Pitch is how high or low a note sounds, set by its frequency: A4, the usual tuning note, vibrates 440 times a second (440 Hz). Shifts are measured in semitones, one piano key each:
- 1 semitone multiplies the frequency by 21/12 ≈ 1.0595, a change of about 5.95 %.
- 100 cents = 1 semitone, so cents fine-tune a shift that falls between two notes.
- 12 semitones = 1 octave = 2× the frequency: A4 at 440 Hz becomes A5 at 880 Hz.
- Every note moves by the same amount, so chords and harmonies stay in tune with each other.
To keep the speed, the engine first resamples the audio, which moves pitch and length together, then time-stretches it back to the original length with a phase vocoder. Output peaks are capped just below full scale, so the file never clips. More on counting steps: what semitones are.
Pitch shift vs playback speed
Pitch sets the key; playback speed (tempo) sets how fast the music moves. On a record player or tape the two are tied: play 5.95 % faster and the song also rises one semitone. This audio speed and pitch changer keeps them apart, so you can change either one alone or both.
| Speed | Pitch also moves by | A 3:00 song lasts |
|---|---|---|
| 50 % | −12 semitones (one octave down) | 6:00 |
| 75 % | −4.98 semitones | 4:00 |
| 90 % | −1.82 semitones | 3:20 |
| 110 % | +1.65 semitones | 2:44 |
| 125 % | +3.86 semitones | 2:24 |
| 150 % | +7.02 semitones | 2:00 |
| 200 % | +12 semitones (one octave up) | 1:30 |
In this tool the right-hand column still applies when you change the tempo (new length = original length ÷ speed), but the middle one does not. A singer who needs a song 2 semitones lower keeps the groove; a guitarist who slows a solo to 75 % keeps the key. More in pitch vs tempo.
Semitone and key chart: every shift from −12 to +12
Pick your shift here before you touch the tool. The key column starts from C; from any other key, count the same number of steps (from G, +2 gives A). Frequencies use equal temperament with A4 = 440 Hz.
| Shift | Interval | From C to | A4 (440 Hz) becomes | Frequency change |
|---|---|---|---|---|
| +12 | Octave | C (one octave up) | 880.00 Hz | +100 % (2×) |
| +11 | Major seventh | B | 830.61 Hz | +88.77 % |
| +10 | Minor seventh | B♭ | 783.99 Hz | +78.18 % |
| +9 | Major sixth | A | 739.99 Hz | +68.18 % |
| +8 | Minor sixth | A♭ | 698.46 Hz | +58.74 % |
| +7 | Perfect fifth | G | 659.26 Hz | +49.83 % |
| +6 | Tritone | F♯ / G♭ | 622.25 Hz | +41.42 % |
| +5 | Perfect fourth | F | 587.33 Hz | +33.48 % |
| +4 | Major third | E | 554.37 Hz | +25.99 % |
| +3 | Minor third | E♭ | 523.25 Hz | +18.92 % |
| +2 | Major second | D | 493.88 Hz | +12.25 % |
| +1 | Minor second | C♯ / D♭ | 466.16 Hz | +5.95 % |
| 0 | Unison | C (unchanged) | 440.00 Hz | 0 % |
| −1 | Minor second | B | 415.30 Hz | −5.61 % |
| −2 | Major second | B♭ | 392.00 Hz | −10.91 % |
| −3 | Minor third | A | 369.99 Hz | −15.91 % |
| −4 | Major third | A♭ | 349.23 Hz | −20.63 % |
| −5 | Perfect fourth | G | 329.63 Hz | −25.08 % |
| −6 | Tritone | F♯ / G♭ | 311.13 Hz | −29.29 % |
| −7 | Perfect fifth | F | 293.66 Hz | −33.26 % |
| −8 | Minor sixth | E | 277.18 Hz | −37.00 % |
| −9 | Major sixth | E♭ | 261.63 Hz | −40.54 % |
| −10 | Minor seventh | D | 246.94 Hz | −43.88 % |
| −11 | Major seventh | C♯ / D♭ | 233.08 Hz | −47.03 % |
| −12 | Octave | C (one octave down) | 220.00 Hz | −50 % (½×) |
Beyond ±12 the pattern repeats one octave away: +24 semitones is 4× the frequency and −24 is a quarter of it. Minor keys work the same way: A minor +3 is C minor.
Sound quality and limits
- 1 to 3 semitones usually sounds natural. Most songs and voices sound as if they had been recorded in the new key.
- Beyond ±5 semitones, artefacts grow. Voices turn thin or boomy, drums soften and reverb can sound metallic. Use big shifts as an effect, not as an invisible key change.
- Formants. A voice raised without formant preservation sounds like a chipmunk; lowered, it sounds oversized. Turn formant preservation on in More options for vocals. On full mixes and instruments, try both and keep the better one.
- Output. WAV is lossless; MP3 is smaller but lossy, so export WAV if you will edit again. A video gives you an audio file, not a new video; the Video Pitch Changer in the list below returns an MP4.
- Your device does the work. Long files take longer and need more memory, most noticeably on older phones. If a file will not open or play, see the troubleshooting guide.
Who uses a pitch changer?
Singers
A song that sits too high strains the chorus; too low and the verses disappear. Lower or raise the track 1 to 3 semitones until the highest and lowest notes feel easy, then practise over the new version. When a song is too high to sing shows how to find that point.
Karaoke
Karaoke machines move a track one semitone per key-button press. Here you do the same to any backing track and keep the file. A song written for the other voice usually needs only 3 to 5 semitones, not a full octave; the male to female key change guide explains why.
Video creators
Creators shift a voice-over, a clip’s music or a sound effect to suit the edit. Open the MP4 or MOV here, download the changed sound and drop it back on your timeline; changing pitch in Premiere Pro covers the editor’s built-in method.
DJs and producers
Two tracks blend best in compatible keys. Shift one a semitone or two to a neighbouring key on the circle of fifths, then match BPM with the separate tempo control, without the pitch drift of a vinyl-style pitch fader.
Pitch changer FAQ
Is this pitch changer free?
Yes. The online pitch changer is free, with no sign-up, no watermark and no limit on downloads. It runs in a current browser on a computer or phone, so there is nothing to install.
How do I change the pitch of a song without changing the speed?
Leave the tempo at 100 %. Open the song and move only the pitch control. The tool time-stretches the audio after shifting it, so the length and BPM stay the same and only the key changes.
How do I change the key of a song?
Count the semitones between the two keys and shift by that amount. The tool shows the original key and names the new one: C to D is +2, E to C is −4. The guide on how to change the key of a song explains every step.
How many semitones should I shift a song for my voice?
Usually 1 to 3. Go down if the chorus strains your voice, up if the low verses feel buried. Songs made for the opposite voice type need 3 to 5 semitones. The chart above gives the new key for every step.
Can I change the pitch of an MP3 or a video?
Yes. MP3, WAV, M4A, OGG and FLAC files open directly, and MP4 or MOV videos give their sound. The download is audio, MP3 or WAV. For a video file back, or a YouTube video while it plays, use the media tools listed below.
Why does my audio sound robotic after a big shift?
The shift is too large for the material. Stay within ±5 semitones where you can, switch formant preservation on for voices, and start from the best file you have: a low-bitrate MP3 already lacks detail, and shifting makes the loss easier to hear.
Tested: what we measured
- Pitch, measured on downloaded files: a 440 Hz tone shifted +3 semitones came back at 523.25 Hz and shifted −12 at 220.00 Hz, both within 0.1 cents of the target.
- Tempo: from 50 % to 200 % speed, the downloaded files matched the expected length within 0.02 %.
- The preview you hear equals the downloaded file sample for sample; MP3 downloads were decoded again and measured.
Measured on the shared audio engine this tool is built on, with synthetic test tones; real songs are harder to measure exactly. Last updated 29 September 2026 by Mayer. How we test: how it works.
All pitch changer tools
Every tool on the site, grouped by the job it does.
Change the pitch of audio, video and voice
- Video Pitch ChangerChange a video’s sound and download a real MP4.
- YouTube Pitch ChangerShift a YouTube video’s key live while it plays.
- Audio Pitch ChangerWAV, FLAC, M4A and OGG with the sample rate kept.
- MP3 Pitch ChangerBatch-shift MP3 files, saved at 128 to 320 kbps.
- Vocal Pitch ChangerRecord or open a voice: deeper, higher, male to female.
- Pitch ShifterPedal-style effect with a ±24 semitone knob.
- Karaoke Pitch Changer♭ and ♯ key buttons, up to 6 steps each way.
Keys, scales and music theory
- Online Key ChangerPick a new key by name; the tempo stays.
- Transpose Music OnlineTranspose chord sheets; the lyrics stay in place.
- Major to Minor ConverterMajor to minor chords and back, parallel or relative.
- Song Key FinderDetect a song’s key, tempo and tuning.
- Semitone CalculatorHalf steps and the interval between two keys.
- How Many Semitones to Change KeyThe shortest shift between any two keys.
- Scale ChangerMove a song to a new Sa or harmonium scale.
- Music Key ChartAll 24 keys with sharps, flats and chords.
Speed and pitch
- Pitch and Tempo ChangerSet key and BPM together or separately.
- Change Pitch Without Changing SpeedHear record-player and keep-speed side by side.
- Change Speed Without Changing PitchSlow a song to 25 % for practice, with a loop.
Tools for singers
- Vocal Range TestFind your lowest and highest notes.
- Voice Type TestSoprano, alto, tenor, baritone or bass?
Voice effects
- Formant ShifterChange a voice’s tone and size, not its notes.
- Autotune OnlinePitch-correct a solo vocal to the key.
Browse all pitch tools on one page, or read the pitch and key guides for the theory behind them.