Audio Pitch Changer
Higher or Deeper, Same Speed
Shift any recording up to an octave higher or lower in semitone steps. Unlike a speed change, your track keeps its exact original duration.
What you control
- Pitch range-12 to +12 semitones
- DurationUnchanged
- OutputSame / MP3 / WAV
- Uploads to serversNone
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How to change audio pitch
- 01Add your audioDrop in an MP3, WAV or OGG file from your device.
- 02Pick a shiftSlide up or down in semitones - each step is one musical half-step.
- 03Download the resultRender the shifted audio and save it at the original length.
Features
True pitch shift
A phase-vocoder changes pitch while keeping tempo - voices stay at their natural pace.
Musical semitone steps
Move a song into a comfortable key one half-step at a time, or transpose a full octave.
Duration untouched
A three-minute song stays three minutes, whatever shift you choose.
Fast preview
Press play to audition the new pitch before committing to the render.
Works on voice and music
Useful for karaoke keys, vocal effects, slowed-down learning and creative sound design.
Private by design
All processing happens inside your browser - nothing is uploaded.
Built for key and voice changes
Why change audio pitch
Sing in your key
Transpose any backing track until it fits your vocal range instead of straining.
Creative voices fast
Deepen a narration or brighten a character voice without touching timing.
Stays private
Unreleased recordings are processed inside your own browser sandbox.
Free forever
No accounts, no quotas, and no watermarks on the download.
Pitch shifting vs speed changing - why they differ
Play a record faster and two things happen: it speeds up and rises in pitch. That is a speed change. A pitch changer separates the two - the note moves up or down while time stands still, which is what musicians usually want when they say a song needs to be 'in another key'.
The trick is a phase vocoder: the audio is broken into thousands of tiny overlapping slices, each slice's frequencies are measured, and the slices are reassembled at a new spacing that shifts frequency content without stretching time. Voices keep their natural pace even twelve semitones away from the original.
Practically, small shifts of one to five semitones sound smoothest. Larger jumps remain usable for effects and practice, but expect a slightly softer, processed character on extreme settings - the trade-off for keeping duration intact.
“I drop warm-up tracks two semitones so younger kids can reach every note comfortably.”
Lucia Moretti - Children's choir teacher
“Guests pick their key, I shift the track accordingly - no more awkward high notes.”
Bunty Sharma - Karaoke host
“Raising my demo vocals four semitones gave me the harmony stack I could not sing.”
Elena Petrova - Musician
Frequently asked questions
Does changing pitch change the speed?
No. This tool shifts pitch only - a three-minute file stays three minutes at any setting. Use the speed changer if you want tape-style changes.
What does a semitone mean?
It is one musical half-step. Twelve semitones equals one octave up or down.
Will large shifts sound natural?
Shifts within a few semitones are very clean. Extreme shifts may sound slightly processed, which is normal for pitch shifting.
Which formats are supported?
MP3, WAV and OGG inputs, exported as the same format, MP3, or WAV.
Are my files uploaded anywhere?
No. The phase-vocoder render happens entirely in your browser.