Pitch Shifter
Change pitch without changing speed — free, in your browser.
100% in your browser — nothing is uploaded
Pitch Shifter
This free online pitch shifter transposes audio up or down by semitones while keeping the tempo exactly where it was. That combination is the useful part: playing a file back faster raises its pitch and shortens it, which is not what you want when a song simply needs to sit lower for a singer. The tool separates the two by resampling the audio to change pitch and then time-stretching it back to the original length with overlapping windowed grains, so a track transposed down three semitones still runs to the same duration and still lines up with your video edit. Common uses are moving a backing track into a comfortable vocal range, matching a sample to the key of a beat, correcting a recording made against a slightly out-of-tune instrument, and creating harmony parts from a single take. Large shifts cost quality — beyond about five semitones in either direction you start to hear the graininess of the stretching process, particularly on sustained vocals and cymbals. Everything runs locally, so nothing is uploaded.
How to use the free pitch shifter
- 1
Load a track
Drag in an MP3, WAV, M4A or FLAC. It is decoded locally in your browser.
- 2
Choose the shift
Set the transposition in semitones, up or down. The tempo is held constant while the pitch moves.
- 3
Preview and export
Listen before committing, then download the transposed file as a WAV with no watermark.
Made for AI music creators
Transposing a backing track for a singer or matching a sample to your beat? Check the original key with the key finder first, then shift by the exact number of semitones you need.
Pitch Shifter: what people search for
Searched as a pitch shifter, a pitch shifter online, a pitch changer, a key changer, a song transposer and "how to transpose a song". Underneath every one of those is the same unstated requirement — change key without changing tempo. That is the whole distinction between a pitch shifter and a speed control, and it is why pitch shift vs playback speed is worth understanding before you touch either: dragging playback speed moves pitch and tempo together, so a track pulled down a semitone by speed also slows down. Here a semitone shift is exactly that, ±12 semitones with the clock untouched.
Pitch Shifter at a glance
- Runs
- Entirely in your browser
- Uploads
- None — files never leave your device
- Account
- Not required
- Cost
- Free, no watermark
- Output
- Lossless WAV where audio is exported
- Works offline
- After the page has loaded
Why it works this way
The pitch shifter runs on your machine
This free online pitch shifter transposes audio up or down by semitones while keeping the tempo exactly where it was. That combination is the useful part: playing a file back faster raises its pitch and shortens it, which is not what you want when a song simply needs to sit lower for a singer.
A free pitch shifter with no signup
Transposing a backing track for a singer or matching a sample to your beat? Check the original key with the key finder first, then shift by the exact number of semitones you need.
What the pitch shifter handles
The cases people actually bring to it.
How do I change the key of a song without changing the tempo? — Load it into this pitch shifter and set the transposition in semitones. The tool resamples to move the pitch and time-stretches back to the original duration, so the length and the sync stay intact.
Up to about three or four semitones is usually transparent on most material. Beyond five you start to hear grain and smearing, most audibly on sustained vocals, cymbals and reverb tails.
What is the difference between pitch shifting and changing playback speed? — Changing speed moves pitch and duration together, like spinning a record faster. Pitch shifting moves only the pitch and leaves the duration alone, which is what you need when the audio has to stay in sync with something else.
Yes, and that is the most common use. Find the original key first, decide how far the singer needs it moved, then shift by that exact number of semitones so the accompaniment stays in tune with itself.
Pitch Shifter — frequently asked questions
How do I change the key of a song without changing the tempo?
Load it into this pitch shifter and set the transposition in semitones. The tool resamples to move the pitch and time-stretches back to the original duration, so the length and the sync stay intact.
How many semitones can I shift before it sounds bad?
Up to about three or four semitones is usually transparent on most material. Beyond five you start to hear grain and smearing, most audibly on sustained vocals, cymbals and reverb tails.
What is the difference between pitch shifting and changing playback speed?
Changing speed moves pitch and duration together, like spinning a record faster. Pitch shifting moves only the pitch and leaves the duration alone, which is what you need when the audio has to stay in sync with something else.
Can I use this to transpose a backing track for a singer?
Yes, and that is the most common use. Find the original key first, decide how far the singer needs it moved, then shift by that exact number of semitones so the accompaniment stays in tune with itself.
Does pitch shifting affect the tempo or BPM?
No. The BPM is preserved by design, so a transposed file still matches the grid of the project it came from.
Is the audio uploaded to a server?
No. Decoding, shifting and export all happen in your browser using the Web Audio API.
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Pitch Shifter
Change pitch without changing speed — free, in your browser.