speed Change Audio Speed

Speed up or slow down audio.

Runs entirely in your browser, your audio is never uploaded. Free, instant, no signup.

upload_file Upload Audio

lock Your audio is processed locally and never uploaded.
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Natural Pitch Preserved

Drag the slider from 0.5x to 2x speed. Pitch stays natural, it doesn't sound like a chipmunk or slow-motion.

How to Use

  1. 1

    Choose your audio file. Click "Choose File" and pick an audio file from your device.

  2. 2

    Drag the speed slider to the rate you want, from 0.5x to 2x.

  3. 3

    Click Change Speed. The first use downloads the audio engine, so give it a few extra seconds.

  4. 4

    Download the result. Click the download link, no email or account needed.

Frequently Asked Questions

No, speed changing happens entirely inside your browser. Your file is never sent to a server.
No, this tool changes speed while keeping the pitch natural, unlike simply changing playback rate.
You can slow down to 0.5x or speed up to 2x.