How it works
- Drop your audio file. MP3, WAV, FLAC, AIFF, OGG or M4A up to 500 MB — it's decoded locally, nothing is uploaded.
- Pick a shift and listen live. Choose anywhere from −12 to +12 semitones, plus a fine-tune in cents if needed (e.g. 440 → 432 Hz): playback follows your settings instantly, no “Apply” button. The duration is preserved, so the tempo doesn't move.
- Compare and download in high quality. Switch between Original and Shifted at the same moment, then download: the file is rendered in high quality (exact pitch) in the same format as your source file.
Features
- ±12 semitones, tempo untouched. The duration is kept constant — a 120 BPM track stays at 120 BPM.
- Live preview. What you hear follows the slider instantly; the download is a separate high-quality render.
- Fine-tune in cents. Retune to a specific reference, with a one-click 440 → 432 Hz preset; the pitch lands on the cent.
- Formants preserved on request. For vocals, keep the natural timbre — no chipmunk effect. The tool warns you past ±5 semitones.
- Same-format export. Lossless sources stay lossless (WAV, AIFF, FLAC); lossy sources are re-encoded at high quality.
- 100% in your browser. Your track never leaves your computer — processing runs locally (Signalsmith Stretch, then ffmpeg.wasm for the export).
FAQ
Is this pitch shifter free?
Yes. Without an account you get 2 free uses per day across AudioKit's free tools; with a free account, 5 per day. A use is only counted at the first download of a result; loading, trying shifts and listening is free. AudioKit Premium removes the daily limit.
Is my audio file uploaded to a server?
No. The file is decoded, transposed (Signalsmith Stretch engine) and re-encoded (ffmpeg.wasm) entirely in your browser and never leaves your machine. The only network call is a tiny anonymous counter that tracks your daily free quota.
Which audio formats are supported?
MP3, WAV, FLAC, AIFF, OGG and M4A files up to 500 MB. The transposed file is exported in the same format as the source: lossless stays lossless, lossy formats are re-encoded at high quality.
Can I change the key without changing the tempo?
Yes — that's exactly what this tool does. The pitch is shifted in semitones while the duration is kept constant, so a 120 BPM track stays at 120 BPM whether you go up 2 semitones or down 5. For the opposite (change tempo, keep pitch), use the Time stretch tool. Not sure of the key? Run the Key finder first.
Does pitch shifting degrade the audio quality?
Honestly: a little, and more as the shift grows. The pitch lands exactly on the value you set and the length is unchanged; shifts of ±1 to ±5 semitones sound the most natural, and beyond roughly ±7 artefacts can become audible, especially on voices — the tool warns you past ±5. For a vocal, tick “Preserve formants” to avoid the chipmunk effect going up. The live preview can differ by a few cents on sustained notes; the downloaded file is rendered separately in high quality, with the exact pitch.