Convert AC3 to M4A Online — Free
Fast, free AC3 to M4A converter. No registration required.
Drop files here or click to browse
Supports: AC3 files
Max: 100MB (free) · 2GB (Pro)
Secure Transfer
HTTPS encrypted uploads
Privacy First
Files auto-deleted after processing
No Registration
Start converting instantly
Works Everywhere
Any browser, any device
How to Convert
Upload your .ac3 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 .m4a file when it's ready.
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
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
AC3 vs M4A
| Feature | AC3 | M4A |
|---|---|---|
| Full Name | Dolby Digital Audio | MPEG-4 Audio |
| Extension | .ac3 | .m4a |
| Best For | Surround sound | Better than MP3 |