Change Audio Speed
Speed up or slow down audio from 0.25× to 4×. Great for podcasts, voice notes and nightcore edits. Free online audio speed changer, runs locally.
How to use Change Audio Speed
- 1Drop your file into the box above.
- 2Adjust the options.
- 3Download the result — everything happens on your device.
Questions
Is Change Audio Speed free?
Yes. Change Audio Speed is 100% free with no limits, no watermark, no sign up and no email required.
Are my files uploaded to a server?
No. Your files are processed entirely inside your browser using JavaScript. They never leave your device, so it is private and works even on slow connections.
Does Change Audio Speed work on my phone?
Yes. Change Audio Speed works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.
Why WAV?
WAV is lossless and every device can play it. Browsers cannot encode MP3 natively, so we output high-quality WAV that you can play or convert anywhere.