Convert MP4 to MP3 online for free. Extract high-quality audio from local MP4 files directly in your browser, with no video upload required.
Choose an MP4 file and extract its audio as an MP3 in your browser.
Best for short MP4 files under 500 MB. Only .mp4 files are accepted.
or drag and drop your MP4 file here
Powered by FFmpeg and ffmpeg.wasm. FFmpeg is a trademark of Fabrice Bellard and a project of the FFmpeg developers.
Extract an MP3 audio file from an MP4 file in three simple steps.
Choose an MP4 file from your device or drag it into the upload area.
Start the conversion. The MP4 file is processed locally in your browser with ffmpeg.wasm.
Preview the converted audio, then download the MP3 file to your device.
Common questions about converting MP4 to MP3 online in your browser.
No. This MP4 to MP3 converter runs in your browser with WebAssembly, so the selected MP4 file stays on your device.
This converter accepts MP4 files only. For other video formats, use the Video to MP3 converter.
The browser downloads the ffmpeg.wasm converter core the first time. After that, conversion speed depends on your device, browser and MP4 file size.
No. The source MP4 file must contain an audio track before an MP3 file can be created.
Only convert MP4 files you own or have permission to use. You are responsible for respecting copyright and local laws.