Convert M4A to AIFF
Convert any audio file to AIFF format online for free. Fast, secure, and easy-to-use audio to AIFF converter with no software installation required.
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Max file size: 50 MBMax duration: 30 min
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How to Use M4A → AIFF
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Drag and drop your M4A file or click to browse. Supports files up to 1GB.
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Select AIFF as your output format and click convert. Our servers will process your file instantly.
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M4A vs AIFF: format comparison
How the two formats differ on the things that change your result.
| Specification | M4A (source) | AIFF (result) |
|---|---|---|
| Container | MPEG-4 Part 14 | IFF / AIFF |
| Developed by | Apple / MPEG | Apple |
| Introduced | 2003 | 1988 |
| Audio codecs | AAC-LC, HE-AAC, ALAC | PCM |
| Compression | Depends on codec | Uncompressed |
| Max sample rate | 96 kHz | 192 kHz |
| Max channels | 8 | 8 |
| Gapless playback | Yes | Yes |
| Metadata / tags | MPEG-4 iTunes-style atoms | ID3 chunk (limited) |
| Approx. file size | 0.72–1.92 MB per minute | 10–32 MB per minute |
| Licensing | Patent-licensed | Royalty-free |
| Plays natively on | Native: Web browsers, Windows, macOS, iOS, Android, Smart TVs | Native: macOS, iOS · Needs a player: Windows, Android, Web browsers |
| Best for | the Apple ecosystem, music libraries, audiobooks | studio editing, the Apple ecosystem, mastering |
What changes when you convert M4A to AIFF
MPEG-4 Part 14 is a container rather than a single codec, so what it holds depends on how the file was made. It can carry AAC-LC, HE-AAC, ALAC, which means two files with the same extension can differ in quality and size. Check the source before assuming which one you have.
Be aware that you are narrowing playback: M4A is natively supported on 4 platforms where AIFF is not. Convert this way when you need the format specifically, not for portability.
The two formats are aimed at different jobs. M4A is typically used for the Apple ecosystem, music libraries, audiobooks, while AIFF is the usual pick for studio editing, the Apple ecosystem, mastering. That difference in intent is what most of the specification gaps above come from.
Expect metadata to be rewritten rather than copied: MPEG-4 iTunes-style atoms in the source becomes ID3 chunk (limited) in the result. Standard fields map cleanly; niche custom tags often do not.
About M4A to AIFF Conversion
This page converts M4A files, stored in the MPEG-4 Part 14 container since 2003, into AIFF, which uses IFF / AIFF and dates from 1988. The differences between the two containers decide what changes in the result.
M4A comes from Apple / MPEG and dates to 2003. It carries AAC-LC, HE-AAC, ALAC, which is what determines the quality ceiling of anything you convert out of it.
AIFF was introduced by Apple in 1988. It carries PCM and has native playback on 2 of six platform categories, which is the practical reason to choose it as a target.
After converting your file, you can use Scriptivox transcription services to convert your audio to text. Perfect for meetings, interviews, podcasts, and more.
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