MP3 to MP4
Convert MP3 files to MP4 in seconds, for free. Nothing to install.
Files are deleted from the server automatically after 1 h.
Why convert MP3 to MP4?
- Upload audio to YouTube, Instagram or TikTok, which accept only video files.
- MP4 is one of the most widely supported formats — it opens almost anywhere.
You don't need to install any software to convert MP3 to MP4. Upload your file, choose MP4 and download the result a few seconds later. The conversion runs on our servers and your file is deleted automatically after 1 h.
MP3 vs MP4: comparison
| Feature | MP3MPEG-1 Audio Layer III | MP4MPEG-4 Video |
|---|---|---|
| Developer | Fraunhofer IIS / MPEG | MPEG (ISO) |
| Released | 1993 | 2001 |
| Type | audio | video |
| Compression | lossy | lossy |
| Opens with | VLC, Windows Media Player, iTunes / Apple Music | VLC, Windows Media Player, QuickTime |
Tip: choose the bitrate. 128 kbps is enough for speech; 320 kbps is the best quality for music.
How it works
- Choose or drop your MP3 file.
- Pick MP4 as the output format.
- Click “Convert” and download your file.
MP3 to MP4: questions and answers
Will quality be lost when converting MP3 to MP4?
MP4 uses compression, but at the default settings the difference is hard to hear or see. You can choose a higher bitrate in Options.
How long does MP3 to MP4 conversion take?
It depends on the length: a short file takes a few seconds, a long video can take a few minutes. Progress is shown as a percentage.
What is the maximum MP3 file size?
Up to 200 MB per file and up to 20 files at once — for free.
Can I convert MP3 to MP4 on my phone?
Yes. TezConvert works in any browser on Android and iPhone — no app needed.
How do I open a MP4 file?
MP4 files open in: VLC, Windows Media Player, QuickTime.
Are my files safe?
Files are used only for the conversion, never shown to anyone, and deleted automatically after 1 h. The original is deleted right after conversion.
⇄ Need the opposite? Convert MP4 to MP3 →