Shift pitch up or down by semitones while the track's length stays exactly the same — useful for matching a key or changing a voice.
The Pitch Changer raises or lowers the pitch of a recording by semitones and cents. Match a backing track to a singer’s range, retune a sample, create harmonies, fix a slightly flat recording or make a voice higher or deeper.
In Same tempo mode the length stays the same (a true pitch shift); in Tape style mode speed and pitch move together as on a record player.
A pitch shift of s semitones is a frequency ratio of 2s/12. The tool resamples the audio by that ratio (with an anti-alias low-pass when pitching up) which changes pitch and duration together, then uses WSOLA time-stretching to restore the original duration. Because the splice points are chosen on a mono mix, stereo images stay intact.
Move a karaoke or backing track into a comfortable key.
Retune loops and samples to the project key.
Chipmunk or deep-voice effects (±7–12 st).
Fix a recording made at A=438 or A=442 to concert pitch with cents.
| Range | −12 to +12 semitones plus ±50 cents |
|---|---|
| Methods | Resample + WSOLA (same tempo) · resample only (tape) |
| Resolution | 0.01 semitone |
The smallest step on a piano: a frequency ratio of about 1.0595.
One hundredth of a semitone.
Moderate shifts do; big shifts also shift formants, which can sound unnatural.
No — duration is preserved. Only the pitch moves; the tool resamples and then time-stretches back to the original length.
Small shifts (within about ±3 semitones) usually sound the most natural. Larger shifts are more noticeably processed, especially on vocals.
This tool runs entirely in your browser using the Web Audio API. Nothing is uploaded, stored or shared — there is no server to send your file to, so it works offline once the page has loaded.
Be the first to share your experience with this tool — your feedback helps others.