Convert MP4 to MP3 — Extract Audio from Video
Pull just the audio track out of an MP4 video and save it as an MP3 — ideal for turning a music video, lecture recording, or podcast video into a standalone audio file.
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Why Extract MP3 from MP4
MP4 bundles video and audio together in one container, but often all you actually need is the sound — a song, a voiceover, a podcast recording — without the video data taking up extra space or requiring a video player to listen.
MP3 is the universal audio format, playable on literally every device and music app, making it the natural choice when a video's audio track is the only part you actually want to keep.
Extracting audio instead of keeping the full video also dramatically reduces file size, since video data is typically far larger than the audio track alone.
How to Extract MP3 from MP4
- Upload your MP4 file.
- MiConvert extracts the audio track and encodes it as MP3.
- Download the converted MP3 file.
- Play it on any device or music app.
Key Features of MiConvert MP4 to MP3
- Extracts the audio track from MP4 video into standalone MP3
- High-quality audio bitrate, matching the source video's audio
- Dramatically smaller file size than keeping the full video
- No video editing software installation required
- Convert several MP4 files in one session — up to 10 at a time
- Free for files up to 50MB, 100MB for registered accounts
Video Tutorial
Watch this step-by-step tutorial to learn how to convert MP4 files to MP3 format online for free using MiConvert.com. No software installation required.
Frequently Asked Questions
Will the audio quality be as good as the original?
The extracted MP3 is generated from the same audio track embedded in your MP4, at a high-quality bitrate — you won't lose meaningful quality compared to what was already in the video.
Can I extract audio from a video that has no sound?
No — if the source MP4 has no audio track, there's nothing to extract. Check that the video actually plays sound before converting.
Will this work on any MP4 file, like phone recordings or downloaded videos?
Yes — any standard MP4 file with an audio track works, regardless of source.
Do I need video editing software to do this?
No — the conversion happens entirely on our servers, no software installation needed.
How do I convert MP4 to MP3 on Windows or Mac?
The same way on any system — MiConvert runs in your web browser, so there's nothing to install on Windows, Mac, or Linux. Upload the MP4 and download the MP3.
Is there a file size limit?
50MB free, 100MB for registered accounts.