Bulk 3GA to M4B Converter Online — Free HD Quality
Drag and drop your multiple 3GA files into this free online 3GA to M4B converter (.3ga to .m4b), and click the Convert button to bulk convert them to M4B format in HD quality. Use the quality slider to fine-tune your M4B output, then download your converted files one by one or as a single ZIP — your original 3GA files are removed from our servers right after.
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PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
3GA vs M4B — File Format Comparison
| Feature | 3GA | M4B |
|---|---|---|
| File Extension | .3ga | .m4b |
| MIME Type | audio/3gpp | audio/mp4 |
| Compression Type | Lossy | Lossy |
| Metadata Support | Yes | Yes |
What Is 3GA Format?
3GPP Audio — audio-only 3GPP mobile container carrying AMR or AAC audio, created by Android and older Nokia/Samsung phones for voice recordings and audio messages.
- Compression: Lossy
- Tags & Metadata: Supported
What Is M4B Format?
MPEG-4 Audiobook — AAC audio in an MP4 container with bookmarking support, the standard format for audiobooks on Apple Books, Audible exports, and iPhone podcasts.
- Compression: Lossy
- Tags & Metadata: Supported
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