Change Audio Speed Free — Speed Up or Slow Down
Speed up a long recording to listen faster, or slow it down to catch every word. Free, no sign-up, and your files never leave your device.
✦ Free forever • No sign-up • No upload • No watermark
Audio Speed Changer — Free, No Sign-Up
Choose an audio file, pick a speed from 0.5× to 2×, preview it, then download the changed file.
Honest note: speed and pitch change together, like a tape recorder — faster audio sounds higher, slower audio sounds lower.
How to use Audio Speed Changer
Choose your audio file
Click the box above or drop an MP3, WAV, OGG or M4A file onto it. The tool shows its length and format.
Pick a speed
Move the slider: 0.5× plays at half speed, 1.5× is one-and-a-half times faster, 2× is double speed. Press “Preview speed” to hear it before you save.
Download the changed audio
Press “Change Speed & Download”. Your audio downloads as a WAV file at the new speed — a 2-minute file at 2× becomes 1 minute long.
Example: Example: a 10-minute lecture at 1.5× speed becomes about 6 minutes 40 seconds — same words, less time. At 0.5×, a fast song becomes half speed for learning the words.
About Audio Speed Changer
Changing audio speed is useful in two directions: speeding up a long lecture, podcast or voice note so you finish sooner, or slowing down a fast song, a language lesson or a tricky recording so you can catch every word. AudioTools changes the speed right in your browser — from half speed to double speed — and you can preview the result before you download it. There is no upload, so your files stay private, and everything is free, with no account and no sign-up.
One honest note: speed and pitch change together, the way a tape recorder works — faster audio sounds higher, slower audio sounds lower. Keeping the pitch the same while changing speed needs heavy processing that a browser cannot do honestly on its own. The result downloads as a WAV file, which opens in every audio app and editor.
Frequently asked questions
How do I change the speed of an audio file?
Choose your audio file, move the speed slider, press “Preview speed” to hear it, then press “Change Speed & Download”. The new file downloads immediately.
What speeds can I choose?
From 0.5× (half speed) to 2× (double speed). 1.5× is a popular choice for lectures and podcasts.
Does the pitch change too?
Yes, honestly: speed and pitch change together, like a tape recorder. Faster audio sounds higher, slower audio sounds lower. Keeping pitch the same while changing speed is not possible in a browser alone.
Is changing audio speed free?
Yes. Changing audio speed on AudioTools is 100% free. There is no paid plan, no length limit and no watermark.
Do my audio files get uploaded?
No. The speed change happens entirely in your browser. Your files never leave your device and nothing is stored on any server.
What format does the changed audio download as?
WAV — uncompressed, full quality, and playable in every audio app. MP3 export is not possible in a browser.
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✓ FREEShare this tool
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