MP4 to MP3 Converter
Extract audio from MP4 video files instantly. Your files stay on your device — nothing is uploaded.
Drop your MP4 file here or click to browse
Max file size: 200 MB
How to Convert MP4 to MP3
Select Your MP4 File
Click the upload area or drag and drop your MP4 video file. Max size is 200 MB.
Extract Audio
Click Convert and the audio track will be extracted as a high-quality MP3 file.
Download MP3
Download your MP3 file instantly. Use it for podcasts, music, or ad voiceovers.
Frequently Asked Questions
How do I extract audio from an MP4 file?
Select your MP4 file by clicking the upload area or dragging it in. Click Convert to MP3 and the audio track will be extracted. Download the resulting MP3 file when complete.
Does this work without an internet connection?
The conversion engine needs to be downloaded once (first use). After that, conversions work offline for the rest of your browser session.
What happens to my video file?
Your file stays on your device. Processing uses WebAssembly technology in the browser — nothing is uploaded to any server.
Can I convert YouTube videos with this?
This tool accepts MP4 files from your device. You would need to download the video first as an MP4 file, then use this tool to extract the audio.
What audio quality will I get?
The output uses high-quality variable bitrate MP3 encoding (~190-250 kbps) with the LAME encoder. This provides excellent quality for music, podcasts, and voiceovers.
Is there a file size limit?
Yes, the maximum file size is 200 MB for reliable browser-based processing. For larger files, consider desktop tools like FFmpeg or HandBrake.
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