Pitch Shift
Pitch Shift raises or lowers the pitch of a clip without changing its speed — up to an octave in either direction, in semitone steps. Use it to match a key, create a chipmunk or deep-voice effect, or nudge a sample into tune. It's all processed in your browser, so nothing is uploaded.
Add your audio file
The file is read by your browser and stays on your device — there is no upload step.
Your audio
The work runs in this tab. Nothing is sent anywhere, and the download is generated locally.
Output —Load audio
How to use Pitch Shift
- 01Upload
Add your audio
Drop your file in and play it to hear the original pitch.
- 02Customize
Shift the pitch
Move the slider up or down in semitones — up to +12 or -12, a full octave each way.
- 03Process
Download
Export to apply the pitch shift and save the file.
What pitch shifting does
Moves the whole recording up or down in semitones without changing how long it lasts. Used for transposing a track to suit a singer, for disguising a voice, and for tuning a sample to a key.
What does not change
The duration. That is the whole point of a pitch shifter as opposed to a speed change — length is preserved. The cost is that the audio must be resynthesised, so large shifts introduce a smeared, slightly metallic quality. Two or three semitones usually passes unnoticed; an octave never does.
Supported formats
- MP3
- WAV
- M4A
- OGG
- FLAC
- Maximum file size —
- bounded by your device's memory
- Processed by —
- FFmpeg (WebAssembly), on your device
Your file, and what the page does
Your file is never uploaded. Pitch Shift reads it into this browser tab and processes it with FFmpeg compiled to WebAssembly on your own device. There is no upload endpoint in the application and no copy on any server — closing the tab discards it.
That is also why processing takes longer here than on a site that uploads: your device is doing the work rather than a rack of servers. The trade is that the file never leaves it.
What the page does send or fetch
- The processing engine, once
- The first time you use any video or audio tool, the browser downloads the FFmpeg WebAssembly build (~30MB) from the jsDelivr CDN and reuses the cached copy afterwards. That is a file coming to you — no part of your own file is in the request.
- Ads on the page
- The site is funded by advertising, so the page loads Google AdSense. That carries the usual web basics — IP address, browser, referring page — as on any ad-supported site.
- An anonymous usage counter
- When Pitch Shift finishes we record that the tool ran, whether it succeeded and how long it took. No file data, no identifier, no cookie.
Your file is not on that list. How this works.
Frequently asked questions
No — the tempo stays the same. Only the pitch moves, so the clip is the same length.
Twelve semitones make an octave. +12 shifts up a full octave, -12 down a full octave; ±1 is a subtle nudge.
Keeping it within ±12 semitones preserves audio quality; beyond an octave, pitch-shifting artefacts become obvious.
Yes — Pitch Shift is completely free. There's no account, sign-up, watermark or limit.
No. It runs in any modern browser — Chrome, Edge, Safari, Firefox, Brave — with nothing to download or install.
Looking for something else?
- Length can change tooChange Speed
- You want the vocal removed, not movedVocal Remover
- The tone is the problem, not the pitchEqualizer
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