Audio Pitch Shifter
Shift audio pitch up or down in semitones without changing playback speed. Free, no signup, works in your browser.
Everything runs inside your browser — your file is never uploaded to a server.
First run downloads the media engine (~30 MB) once, then it stays cached.
About this tool
Changing the pitch of a recording is useful for transposing a song to a different key, disguising a voice, or matching musical accompaniment. This tool shifts pitch up or down in precise semitone increments while keeping the playback duration unchanged, using FFmpeg's audio filters compiled to WebAssembly running entirely in your browser. You can raise a vocal track by a few semitones to match a different singer's range, lower a recording to sound deeper, or fine-tune an instrumental track to align with another. Because the processing happens on your device, you can experiment with different semitone values instantly, previewing each result before committing to a final export in your original audio format.
How to use this tool
1. Choose your audio file
Select the recording you want to pitch-shift from your device.
2. Set the semitone shift
Enter how many semitones up or down to shift the pitch.
3. Run the shift
FFmpeg processes the pitch change locally in your browser.
4. Download the result
Save the pitch-shifted audio to your device.
Why use this tool
Whether you're transposing a song for a different vocal range, creating a disguised voice effect, or matching two recordings pitched differently, precise semitone control makes fine adjustments possible without re-recording. Running locally means instant previews and unlimited experimentation with different shift values before settling on the final result.
Tips & best practices
- Shift in small increments of 1-2 semitones at a time to keep vocals sounding natural.
- For matching two instrumental tracks, use a tuner to find the exact semitone difference first.
- Extreme shifts of more than an octave work best for sound effects rather than natural voice or music.
Common use cases
- Transposing a cover song's vocal track to match a different singer's range.
- Creating a disguised or altered voice for a video project.
- Matching the pitch of a sampled instrument to the rest of a mix.
- Adjusting a karaoke backing track to suit a singer's comfortable range.
- Experimenting with playful pitch effects for a fun WhatsApp voice message.
Frequently asked questions
Does shifting pitch also change playback speed?
No, the tool shifts pitch independently while keeping the original duration and speed.
How many semitones can I shift?
You can shift up or down across a wide range, typically several octaves in either direction.
Will shifting pitch make vocals sound unnatural?
Small shifts of a few semitones sound natural; extreme shifts can introduce audible artifacts.
Can I use this to change a song's musical key?
Yes, shifting by whole semitones effectively transposes the key of the track.
Does it work on both music and spoken voice?
Yes, the pitch filter applies to any audio content, music or speech.
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