Audio Speed Changer

Change audio speed online. Slow down or speed up a recording, preserve pitch when needed, preview the edit and export locally in your browser.

MP3 or WAV · Drop a file here. Audio stays on your device.

Faster audio sounds higher; slower audio sounds lower.

Choose a file to get started.

Output options & limits

Preview and WAV use the same processed audio. MP3 uses lossy encoding. Limits: 80 MB, 10 minutes, mono or stereo.

Worth the wait. Zero audio uploads.Processed entirely on your device.

Make an audio recording faster or slower without opening a desktop editor. Choose a file, adjust the playback speed, and decide whether the notes and voices should keep their original pitch. Processing happens on your device.

Audio stays on your device

Two ways to change audio speed

Change speed and pitch together. A higher speed makes the recording shorter and raises the pitch; slower playback lowers it. This is useful for classic sped-up song edits and slow-motion sound effects.

Change speed while preserving pitch. The recording becomes faster or slower, but an audio-processing algorithm works to keep the original tonal center. It is useful for listening to speech faster or adjusting a music track’s timing without deliberately raising the notes. Extreme settings may introduce audible artifacts.

How it works

  1. Choose a supported audio file.
  2. Set a speed such as 0.8×, 1.25× or 1.5×.
  3. Pitch preservation is applied automatically on this page.
  4. Wait for the automatic preview, then press Play to listen.
  5. Download the result as MP3 or WAV when the format is supported.

Speed versus pitch: what’s the difference?

Speed changes playback duration. Pitch is how high or low a voice or musical note sounds. Normal faster playback changes both. Time-stretch processing can change the first while reducing changes to the second, although output quality depends on the recording and the processing ratio.

For an effect that only shifts musical notes, try the Pitch Changer. For a classic sped-up music sound with higher vocals, see Speed Up Songs.

Frequently asked questions

Can I change audio speed without changing the voice pitch?

Yes, select Preserve pitch in this tool if your browser supports the advanced audio processor. The editor will tell you if that processing mode is unavailable on your device.

What is 1.5× audio speed?

At 1.5×, a recording plays 50% faster, so its duration becomes about two-thirds of the original.

Does this work with podcasts and voice recordings?

You can edit audio files your browser can decode, including many speech recordings. Exact input format support varies by browser.

Is the file sent to a server?

No. Audio decoding, processing and exporting are performed in your browser. Long recordings may take extra time and memory on older devices.

Can I save an MP3?

Yes where MP3 exporting is supported; WAV is also available. The editor reports export format availability.

Read How to change audio speed without changing pitch for an explanation of time-stretching and practical settings.