MP3 to MP4 Converter
Convert MP3 files to MP4 in your browser. Choose your file, adjust available settings, then download the converted file.
Maximum 100 MB per file, up to 5 files at a time.
300+ formats supported
Convert between 300+ file formats in your browser.
Fast and easy
Just drop your files on the page, choose an output format and click "Convert".
How to convert MP3 to MP4
- Click the “Choose Files” button to select your files.
- Click on the “Convert” button to start the conversion
- When the status change to “Done” click the “Download” button
About MP3
MPEG Audio Layer III · Audio
A widely supported compressed audio format for music, speech and podcasts.
Opens with: Most phones, browsers, music players and car stereos.
Strengths: Works almost everywhere and supports tags.
Limitations: Lossy compression removes some audio detail.
About MP4
MPEG-4 Part 14 · Video container
A common video container that usually holds H.264 or H.265 video and AAC audio.
Opens with: Phones, browsers, TVs, editors and social platforms.
Strengths: Very broad compatibility.
Limitations: Features depend on the audio and video codecs inside.
Why convert MP3 to MP4?
A widely supported compressed audio format for music, speech and podcasts. A common video container that usually holds H.264 or H.265 video and AAC audio.
Make video broadly playable. Keep the original file until you have checked the result.