Convert AAC to AC3
AAC is great for efficient music files and broadcast audio, but AC3 is the better choice for home theatre and surround sound. Convert AAC to AC3 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 AC3
- 1
Tap Choose files and select one or more AAC files (or drag them in).
- 2
Check that AC3 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 AC3 downloads automatically. Converting several files? Grab them all as a ZIP.
AAC vs AC3
Both formats are lossy, so the audio is re-encoded once. Pick High quality to keep it as close to the original as possible, or Small for the smallest file.
| AAC | AC3 | |
|---|---|---|
| Full name | Advanced Audio Coding (raw ADTS) | Dolby Digital (AC-3) |
| Type | Audio | Audio |
| Compression | Lossy | Lossy |
| Developed by | MPEG | Dolby Laboratories |
| Introduced | 1997 | 1991 |
| Plays on iPhone | ✓ Yes | ◐ Partly / with an app |
| Plays on Android | ✓ Yes | ◐ Partly / with an app |
| Plays on Windows | ✓ Yes | ✓ Yes |
| Plays on Mac | ✓ Yes | ✓ Yes |
About AAC and AC3
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.
AC3: AC3 is Dolby Digital surround sound, used on DVDs, Blu-rays and TV broadcasts. It supports up to 5.1 channels.
Frequently asked questions
How do I convert AAC to AC3 on my phone?
Will converting AAC to AC3 reduce quality?
Is this AAC to AC3 converter free?
Are my files uploaded to a server?
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