Does changing the pitch change the length?

No. The length stays the same. The tool that changes length and pitch together is Change speed.

How do I raise the sound by one octave?

Set “Pitch” to +12. To lower it by one octave, set it to −12.

Which files can I open?

Audio files. The tool opens files whose sound the browser can read, such as MP3, WAV and M4A. If it can't be read, a message appears.

Change pitch · Pegmo

Change pitch

Drop a file here

Raise or lower the sound without changing its length. Files are processed on your device.

MP3·WAV·M4A·OGG·FLAC

How to use Change pitch

What it does

Raise or lower the sound without changing its length. Pitch is set in semitones, up to 12 semitones (one octave) up or down. The file is processed on your device and is not uploaded.

Step by step

Drop an audio file onto the page, or click to choose one.
On the “Pitch” tab, type a number into the “Pitch” field or move the slider. You can choose from −12 to +12, and the starting value is +2.
On the “Save” tab, choose WAV or MP3 under “Save format”. The default is WAV.
Click “Change pitch”. When it finishes, use “Save” to download the file.

Good to know

12 semitones is one octave. +12 is an octave up and −12 is an octave down.
The length does not change. The result screen also says “The length is unchanged.”
The play button on the screen plays the original sound. It does not preview the changed pitch.
At 0 nothing changes, so “Change pitch” can't be clicked.
If the sound is longer than 1 minute, a message says it takes a while to process.
Whatever the original format, the result is WAV or MP3. MP3 is saved at 192 kbps, and the converter (about 32 MB) is downloaded the first time.
This tool opens audio files only. The file name is the original name followed by “-pitch”, for example song-pitch.wav.
Press Space to play and pause.

Frequently asked questions

Does changing the pitch change the length?: No. The length stays the same. The tool that changes length and pitch together is Change speed.
How do I raise the sound by one octave?: Set “Pitch” to +12. To lower it by one octave, set it to −12.
Which files can I open?: Audio files. The tool opens files whose sound the browser can read, such as MP3, WAV and M4A. If it can't be read, a message appears.