1
Upload MP4Choose the MP4 file you want to convert.
2
Review File
3
Convert to MP3
4
Download MP3
video Converter• 100% Client-Side

MP4 to MP3 Converter

Extract audio stream from MP4 videos into high-quality MP3.

mp4→mp3

Drop MP4 file(s) here, or browse

Supports single or multiple batch conversion

Private by Design

Your files are processed directly on your device using WebAssembly, HTML5 Canvas, and client-side runtimes.

No server upload No cloud copy 100% local processing
How To Convert

How to Convert MP4 to MP3

Step 1

Upload MP4

Choose the MP4 file you want to convert.

Step 2

Review File

Check the file information and conversion options.

Step 3

Convert to MP3

Start the local MP4 to MP3 conversion.

Step 4

Download MP3

Download your converted MP3 file.

Frequently Asked Questions

Questions about MP4 to MP3 Conversion

Does extracting MP3 from MP4 upload my video?

No. The video is read and decoded right inside your browser with WebAssembly FFmpeg.

Can I extract audio from large MP4 files?

Yes, browser memory handles typical recordings smoothly. For very large files, Codovate provides progress tracking.