How to convert MP3 files to MP4 online?

Step 1.

Upload MP3-file

Click "Choose File" button to select a mp3 file on your computer. MP3 file size can be up to 50 Mb.
Step 2.

Convert MP3 to MP4

Click "Convert" button to start conversion.
Step 3.

Download your MP4

Let the file convert and you can download your MP4 file right afterwards.

FAQ

  • First you need to add file for conversion: drag and drop your MP3 file or click the "Choose File" button. Then click the "Convert" button. When MP3 to MP4 conversion is completed, you can download your MP4 file.
  • Audio conversion is pretty fast. You can change MP3 to MP4 in a few seconds.
  • In addition to converting MP3 to MP4, our converter tool supports more than 300 file formats (images, documents, video, audio and others).
  • Yes, you can use AnyConv on any operating system that has a web browser. Our MP3 to MP4 converter works online and does not require software installation.

Information about MP3 and MP4 file formats

Name MP3 MP4
Full name MP3 - MPEG-1 or MPEG-2 Audio Layer III MP4 - MPEG-4 Part 14
File extension .mp3 .mp4, .m4a, .m4p, .m4b, .m4r, .m4v
MIME type audio/mpeg, audio/MPA, audio/mpa-robust video/mp4
Developed by Fraunhofer Institute International Organization for Standardization
Type of format Digital audio Media container
Description MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio which uses a form of lossy data compression. It is a common audio format for consumer audio streaming or storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players. MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.MPEG-4 Part 14 or MP4 is a digital multimedia format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.
Technical details The use of lossy compression is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio. An MP3 file that is created using the setting of 128 kbit/s will result in a file that is about 1/11 the size of the CD file created from the original audio source. Most kinds of data can be embedded in MPEG-4 Part 14 files through private streams. A separate hint track is used to include streaming information in the file. The registered codecs for MPEG-4 Part 12-based files are published on the website of MP4 Registration authority (mp4ra.org).
Associated programs VLC media player, MPlayer, Winamp, foobar2000. Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player
Wiki https://en.wikipedia.org/wiki/MP3 https://en.wikipedia.org/wiki/MPEG-4_Part_14