Convert M4A to AC3 Online — Free
Fast, free M4A to AC3 converter. No registration required.
Drop files here or click to browse
Supports: M4A files
Max: 100MB (free) · 2GB (Pro)
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How to Convert
Upload your .m4a file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .ac3 file when it's ready.
What is M4A?
M4A is an audio-only MPEG-4 container, commonly using AAC encoding. It provides better quality than MP3 at similar file sizes.
Format Details
- Full Name
- MPEG-4 Audio
- Extension
- .m4a
Key Features
- Better than MP3
- Apple ecosystem
- AAC encoding
- Metadata support
What is AC3?
AC3 is Dolby Digital's audio format commonly used in DVDs, Blu-rays, and streaming services. It supports surround sound up to 5.1 channels.
Format Details
- Full Name
- Dolby Digital Audio
- Extension
- .ac3
Key Features
- Surround sound
- DVD/Blu-ray
- 5.1 channels
- Dolby standard
M4A vs AC3
| Feature | M4A | AC3 |
|---|---|---|
| Full Name | MPEG-4 Audio | Dolby Digital Audio |
| Extension | .m4a | .ac3 |
| Best For | Better than MP3 | Surround sound |