Convert M4A to AAC
Free, fast and secure — convert M4A to AAC right in your browser.
M4A
AAC
Upgrade your M4A to a modern AAC
Converting M4A to AAC adopts a modern, highly efficient format that keeps quality high while cutting file size — a smart default for today’s web and apps.
How to convert M4A to AAC
- 1 Drop your M4A file into the converter above.
- 2 It is converted to AAC automatically — no settings to fiddle with.
- 3 Download your new AAC file instantly.
M4A vs AAC
| Feature | M4A | AAC |
|---|---|---|
| Compression | Lossy | Lossy |
| MIME type | audio/mp4 | audio/aac |
| Best for | High-quality music and voice on Apple devices and modern apps. | Streaming and modern playback where quality-per-byte beats raw compatibility. |
About the formats
M4A
M4A (AAC) audio
M4A holds AAC audio, the default for Apple Music and iTunes. It generally sounds better than MP3 at the same bitrate and is well supported on modern devices.
Strengths
- Better quality than MP3 at equal size
- Default on Apple platforms
- Efficient, modern codec
Limitations
- Slightly less universal than MP3
- Lossy compression
- Occasional legacy-player issues
Best for: High-quality music and voice on Apple devices and modern apps.
AAC
AAC audio
AAC is the successor to MP3, offering better sound at the same bitrate. It is the standard for streaming services, YouTube and Apple devices.
Strengths
- Better quality than MP3 at equal size
- Standard for streaming platforms
- Wide modern-device support
Limitations
- Lossy compression
- Slightly less universal than MP3
- No lossless mode
Best for: Streaming and modern playback where quality-per-byte beats raw compatibility.
Frequently asked questions
Upload your M4A file above and it is converted to AAC automatically. When it is ready, download your new AAC audio — the whole thing takes just a few seconds in your browser.
Converting M4A to AAC adopts a modern, highly efficient format that keeps quality high while cutting file size — a smart default for today’s web and apps.
Converting between compressed formats can introduce minor changes, but our converter keeps your AAC looking as close to the original as possible.
Yes. The converter is free to use, with no watermark and no sign-up required.
Your files are processed securely and are never shared with anyone.