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Audio Tools

Change Song Key Online

Change a song key up or down by semitones without changing the playback speed.

Related tools

Separate vocals and instrumental→Cut Audio→Volume Booster→Compress Audio→

How to use

  1. Choose a song or audio file.
  2. Check the estimated BPM and key.
  3. Move the semitone control and download the transposed MP3.

What this tool does

Detect an estimated BPM and musical key, then transpose the audio one semitone at a time online.

Worked example

To move a song from C to D, raise it two semitones. To move E down to D, lower it two. The shift affects every note in the audio rather than just a displayed chord name.

Limits that affect the result

Large shifts can make voices and instruments sound artificial. Transposition does not correct individual tuning errors or automatically choose a singer’s ideal key.

How to change a song key without changing speed →

Formats and limits

Common formats

MP3, WAV, AAC, M4A and compatible formats

Limits

Very large files can take longer and depend on the memory available on the device.

Tips for a better result

  • Use clean audio when quality matters.
  • Preview the result before downloading.
  • Keep the original for comparison.

Frequently asked questions

Does changing the key change the BPM?

EditFull changes only the pitch and preserves the original playback duration.

Are BPM and key exact?

They are automatic estimates and can vary with complex recordings.