Convert M4A to MP3 offline
Convert local M4A files to MP3 files offline by JavaScript in your web browser without any software downloads or file uploads!
OUTPUT FILES:
| # | File Name | File Size | Actions |
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How to convert M4A to MP3 offline
Choose local M4A files, choose "MP3" as target audio format, then click the "CONVERT OFFLINE" button to start offline conversions in bulk. File size can be up to 2GB. Please note this offline audio converter only works in web browsers that support new technologies such as WebAssembly, Shared Array Buffer and Site Isolation. Use online converter instead if this offline converter doesn't work in your web browser.
| Name | M4A | MP3 |
| Full name | Audio-only MPEG-4 | MPEG-1 or MPEG-2 Audio Layer III |
| File extension | .m4a | .mp3 |
| MIME | video/mp4 | audio/mpeg, audio/MPA, audio/mpa-robust |
| Developed by | International Organization for Standardization | Fraunhofer Institute |
| Type of format | Media container | Digital audio |
| Introduction | MPEG-4 Part 14 or MP4 is a digital multimedia container format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. M4A stands for MPEG 4 Audio and is a filename extension used to represent audio files. | 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. |
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