Pitch Shifter
Raise or lower the pitch of any audio file by up to 24 semitones using the Web Audio API — runs entirely in your browser, no upload required.
100% client-side · no upload
Load a file to begin.
How to use
- Choose your audio file. Any format your browser can decode is accepted.
- Enter the number of semitones to shift: positive raises pitch, negative lowers it (range −24 to +24).
- Click Apply Pitch Shift and download the WAV output.
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Frequently Asked Questions
- How does pitch shifting work in the browser?
- This tool changes pitch by adjusting the playback rate: speeding up raises pitch, slowing down lowers it. This also changes the duration proportionally.
- Does pitch shifting change the duration?
- Yes. Raising pitch by 12 semitones (one octave) doubles the speed, halving the duration. Lowering by 12 semitones doubles the duration.
- What is a semitone?
- A semitone is the smallest interval in Western music — the distance between adjacent keys on a piano. 12 semitones = 1 octave.
- Is the file uploaded for processing?
- No. Pitch shifting uses the Web Audio API OfflineAudioContext entirely in your browser.
Last updated: By jarvisbox