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Playback Speed Changer

Change audio speed and export a new file.

In your browser · No uploads · Your original stays unchanged

  1. 1 Choose a file
  2. 2 Preview & adjust
  3. 3 Listen & download
Choose an audio file or drop it here MP3, WAV, M4A, FLAC, OGG and Opus

Adjust playback speed

Choose a file to preview it and prepare an export.

Output settings

Keeps voices and music at their original pitch as speed changes.

Original plays unchanged. The processed preview updates automatically and uses the same audio as your download.

MP3 plays on most devices. Standard quality suits everyday listening.

Advanced

Automatic channels keep the source layout where supported. MP3 converts surround audio to stereo.

Automatic preserves the source sample rate where the format supports it.

Adjusts loudness for a more consistent listening level.

Processed preview

Listen at normal speed (1×), then download this prepared audio.

Choose a file to prepare a preview.

Help & FAQ — Playback Speed Changer

How to use

  1. Add an audio file (podcast, voice note, lecture, etc.).
  2. Set the speed, pitch mode, and export format.
  3. Wait for Ready, listen to Processed preview, then download that prepared audio.

Use cases

  • Speed up lecture audio to review notes faster.
  • Slow down practice tracks to learn tricky passages.

Tips & FAQs

Can I keep the original pitch?
Yes—leave Keep original pitch enabled to stretch time without changing pitch.
Why does preparing the preview take longer on large files?
Long recordings need more processing time in the browser, especially on low-powered devices.

Formats & limits

  • Input: audio files up to the limits of your browser memory
  • Output: MP3, M4A, OGG, WAV or FLAC based on export settings
  • Preview playback uses your device audio output

Privacy

Processing happens in your browser. Download saves output locally; when available, Share sends it through your chosen app.

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Updated

11 October 2026