FREE BROWSER AUDIO TOOL
Tempo Changer online.
Change the playback rate to speed up or slow down audio. Choose a file in the studio, preview what changes, and export a WAV file.
Use Tempo Changer
Change the playback rate to speed up or slow down audio.
- Open the studio using the button below.
- Select an audio file from your device.
- Adjust the relevant controls or use the special-tool buttons.
- Preview your changes and export WAV when ready.
What this version supports
This simple rate control changes pitch and tempo together. It does not preserve pitch.
Private audio processing
Audio is decoded and processed in your browser; WAV export stays local. If you choose MP3 export, the processed selection is sent to this server for FFmpeg encoding only after you opt in. Large files require memory and browser codec support can vary.