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Add a file
Choose an audio file in MP3, WAV, FLAC, AAC, M4A, or OGG format. The file is decoded in your browser so you can work without uploading it to a server.
Pitch Shifter
Move a track up or down in pitch for key changes, demos, or creative edits — processed locally in your browser.
Drop an audio file here
or click to choose from your computer
MP3 · WAV · FLAC · AAC · M4A · OGG
+0
No shift
Frequency ratio: 1.000×
0:000:00
Working…
Local processing in your browser · Files are not uploaded to our servers
What is the Pitch Shifter?
The Pitch Shifter changes the perceived key of a recording. Typical uses include trying a higher key for a cover, dropping a vocal slightly, or matching another take.
This version uses a practical browser approach: rate-based shift with length compensation where possible. For studio-grade independent time/pitch, a full DAW still wins — here the goal is a quick, private edit.
You work in semitones (−12 to +12). That maps cleanly to musical intervals: a whole step, a perfect fourth, a perfect fifth, or a full octave. Quick-jump buttons set common intervals so you do not have to count steps by hand.
With Preserve tempo on, the tool aims to keep the original duration while only the pitch moves — useful for karaoke, practice tracks, and key matching. Turn it off for the classic “tape speed” effect where pitch and speed change together.
After export you can convert the WAV result with the Audio Converter if you need MP3 or another format. Everything runs in your browser; files are not uploaded to Sound Booster servers.
How it works
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Choose pitch
Move the pitch in semitone steps from −12 to +12. Use the quick interval buttons for common musical changes, then preview the result before exporting.
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Export
When the pitch sounds right, export the processed audio as WAV. If you need MP3 or another format, send the result to the Audio Converter.
Pitch shifting tips
Pitch shifting is useful when a recording is close to the key you need but not quite there. For example, singers can raise or lower a backing track to match their comfortable range, musicians can move a practice track into another key, and creators can make quick vocal or sound-design variations.
Small changes usually sound more natural than extreme ones. A few semitones can be enough for key matching, while larger shifts may introduce audible artifacts depending on the source recording. Clean, well-recorded audio generally gives better results.
The Preserve tempo option is useful when you want the recording to keep approximately the same duration while the pitch changes. Turn it off when you want the traditional tape-style effect, where changing pitch also changes playback speed.
Frequently asked questions
Is this the same as speed change?
Related, but the control is framed in semitones for musical adjustments rather than as a playback rate. The Speed Changer changes tempo and pitch together, while the Pitch Shifter aims to move only the key when Preserve tempo is on. Turn that option off if you want the classic tape-speed effect. Extreme shifts can sound artificial in either mode.
Do my files leave this device?
No. Core processing is designed to run locally in the browser. We do not upload your audio to Sound Booster for this tool, so the preview and the exported file are both generated on your device. That makes it suitable for private demos, vocal takes and backing tracks you do not want to share.
Is this tool free?
Yes. No account is required to use it in the browser. You can try different semitone values, switch Preserve tempo on and off, preview each version, and download the result without signing up or paying. Large files simply depend on how much memory your device has available.
What is a semitone, and how big is an octave shift?
A semitone is the smallest step on a piano, one key to the next. Two semitones make a whole step, five make a perfect fourth, seven make a perfect fifth, and twelve make a full octave. The tool covers −12 to +12, and the quick buttons jump straight to these common intervals so you do not need to count.
Does Preserve tempo give studio-quality results?
It is a practical browser approach: the tool shifts pitch and compensates for length where possible. Small shifts of a few semitones usually sound fine, while large moves can add a slightly processed or artificial quality. For critical studio work, a dedicated DAW with advanced time and pitch algorithms will still do better. Here the aim is a quick, private edit.
How do I match a track to another song’s key or my vocal range?
Move the pitch one semitone at a time and listen against the other track or your own voice. Shifting up two semitones raises the key by a whole step, and shifting down three is a common way to ease a high vocal. Keep Preserve tempo on so the song keeps its original speed, and use quick-jump intervals for bigger changes.
Will the voice sound like a different person after shifting?
With larger shifts, yes. Raising the pitch makes a voice sound smaller and brighter, and lowering it makes it sound deeper, because the tool does not model the vocal tract separately. Small changes of one to three semitones are usually subtle. For a clear character effect, try a bigger shift and listen for artefacts before exporting.
Which format is the pitch-shifted file saved in?
The processed audio is exported as WAV, which keeps the quality of the shift without another compression step. If you need an MP3 or another format for sharing or uploading, send the WAV to the Audio Converter afterwards. Keep the WAV as a master copy if you might try different shifts later.
Related tools
Keep editing with other browser-based tools on Sound Booster.