Convert AAC to M4A
AAC is great for efficient music files and broadcast audio, but M4A is the better choice for high-quality music and voice recordings for Apple and Android devices. Convert AAC to M4A in seconds, right in your browser.
- No upload — 100% private
- Fast, lossless when possible
- Free & unlimited
- Works on iPhone & Android
Keep this tab open — the conversion runs on your device, nothing is uploaded.
Add more files above to keep converting.
How to convert AAC to M4A
- 1
Tap Choose files and select one or more AAC files (or drag them in).
- 2
Check that M4A is selected. Use Advanced options for bitrate, channels or trimming.
- 3
Press Convert. Everything happens on your device — no upload, no waiting in a queue.
- 4
Your M4A downloads automatically. Converting several files? Grab them all as a ZIP.
AAC vs M4A
AAC and M4A can hold the same codecs, so in Smart mode the streams are copied — the conversion takes seconds and quality is identical to the original.
| AAC | M4A | |
|---|---|---|
| Full name | Advanced Audio Coding (raw ADTS) | MPEG-4 Audio (AAC) |
| Type | Audio | Audio |
| Compression | Lossy | Lossy |
| Developed by | MPEG | Apple / MPEG |
| Introduced | 1997 | 2001 |
| Plays on iPhone | ✓ Yes | ✓ Yes |
| Plays on Android | ✓ Yes | ✓ Yes |
| Plays on Windows | ✓ Yes | ✓ Yes |
| Plays on Mac | ✓ Yes | ✓ Yes |
About AAC and M4A
AAC: AAC is the successor to MP3 and the audio codec behind YouTube, iTunes and most streaming services. A .aac file stores the raw AAC stream without an MP4 wrapper.
M4A: M4A is an MPEG-4 container holding AAC audio. It sounds better than MP3 at the same size and is the default format for iPhone voice memos, Apple Music downloads and many Android recorders.
Frequently asked questions
How do I convert AAC to M4A on my phone?
Will converting AAC to M4A reduce quality?
Is this AAC to M4A converter free?
Are my files uploaded to a server?
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