MP4 to M4A
Convert MP4 files to M4A with a focused browser-based tool.
Convert MP4 to M4A online
MP4 is a widely supported video container used across phones, browsers and streaming platforms. M4A is an audio container commonly used with AAC or ALAC codecs. Converting from MP4 to M4A is useful when you need modern music libraries and efficient audio delivery, or when a player, editor or publishing workflow expects this audio format.
How to convert MP4 to M4A
- Choose a MP4 file from your device.
- Review any available quality or output settings.
- Start the conversion and download the finished M4A file.
What to know before converting
Re-encoding compressed media can reduce quality. Use a suitable bitrate or quality setting when one is available. This tool is designed to perform supported conversions in the browser, so you can get to the result without installing desktop software.
About MP4 and M4A files
MP4 video is useful for broad playback compatibility and web delivery. M4A audio is useful for modern music libraries and efficient audio delivery. Choosing between them depends on the software you use, the level of compatibility you need, and whether file size, editability, quality or transparency matters for your workflow.