File Format Guide
What is a .M4A file?
The M4A format (short for MPEG-4 Audio) is an audio format that uses lossy compression, trading some fine detail for much smaller files. It acts as a container that packages audio together for playback. M4A files open natively in every modern web browser.
.M4A at a glance
| Category | Audio |
|---|---|
| Type | Audio |
| Compression | Lossy |
| Open standard | No |
| Opens in web browsers | Yes |
| Typical file size | Small |
How to open a .M4A file
You can open M4A files with Apple devices, iTunes, and most players. If a program on your device cannot read one, the quickest fix is to convert it to a more common format — no software install required.
M4A pros and cons
Strengths
- high-quality AAC audio in a tidy container
- standard for Apple Music and voice memos
- supports metadata and cover art
Limitations
- less universal than MP3 on non-Apple devices
What .M4A files are used for
- Apple music libraries
- podcasts and voice memos
- mobile recordings
Need to convert a .M4A file?
Convert M4A to and from other formats free in your browser — no signup to start, no watermarks.
Open the M4A Converter