MP4 to MP3
Convert MP4 to MP3 online for free — everything runs in your browser, files are never uploaded.
🔒 Lock All processing happens locally in your browser. Files never leave your device and there is no file-size limit.
How to use MP4 to MP3
- 1. Upload: click the drop area or drag your files in — batch selection is supported.
- 2. Adjust options: pick the output format or page range; the defaults work out of the box.
- 3. Run and download: everything runs locally in your browser, then save the result.
FAQ
Is MP4 to MP3 free?
Yes. MP4 to MP3 on Baizhuan is completely free with no usage limits and no account required.
Are my files uploaded to a server?
No. MP4 to MP3 runs entirely inside your browser, so your files never leave your device.
Do I need to install anything?
No. MP4 to MP3 works directly in the browser on Windows, macOS, Linux, Android and iOS.