Convert MP4 to MP3 Free
Convert MP4 to MP3 without paying a cent. No trial period. No account required. Just open the page and convert.
Drop your MP4 file here or click to browse
MP4 (.mp4) · Max 20 MB
Most free converters add watermarks or throttle quality. AudioUtils does neither. You get the same output quality whether free or paid.
Free users get 5 conversions per month with a 10-second preview output. The conversion engine is identical to Pro — same speed, same quality, same privacy. Upgrade for full-length output.
Your files stay on your machine. Nothing is uploaded. Both MP4 and MP3 are lossy formats. Each re-encode can degrade quality slightly. Convert once and keep the result.
Frequently Asked Questions
Will I lose audio quality converting MP4 to MP3?
Most MP4 files already use AAC audio compression. Converting to MP3 involves re-encoding, which can introduce minimal quality loss. At 320kbps, the difference is negligible for most listeners.
Can I extract audio from YouTube downloads?
If you have a locally saved MP4 file, yes. This tool processes files on your device — it doesn't download from URLs.
What happens to the video data?
The video track is discarded entirely. Only the audio is extracted and converted to MP3. Your file size drops dramatically.
About MP4
The most common video container format. Used by YouTube, smartphones, and cameras. Extract audio from any MP4 file instantly.
About MP3
The most widely used audio format. Great compatibility, small file size. Ideal for music, podcasts, and general use.