Audio conversion
Convert M4B to OGG
M4B is the format used for audiobooks and podcasts on Apple devices, built around chapters and a remembered play position. OGG is a plain audio format that plays in many non-Apple media players and games, but without chapters or bookmarking. To convert, open the file in a converter and export it as OGG on your own computer, without uploading it.
All 2,748 conversions verified on macOS, Windows, and Linux against the shipping release, this one included. Every conversion runs entirely on your own computer.
- Extension
- .m4b
- Type
- Audio
- Typically
- Audiobooks, podcasts
- Compression
- Lossy
- Extension
- .ogg
- Type
- Audio
- Typically
- Open-source audio, games
- Compression
- Lossy
Convert M4B to OGG on your own computer. Nothing uploads.
One-time purchase, no subscription. 14 days to change your mind.
How to convert M4B to OGG
- Open Morphjet and drag in the M4B audiobook or podcast file, or a whole folder of them.
- Choose OGG as the output format.
- Convert. The OGG file is written next to your original, and nothing leaves your machine.
M4B vs OGG: what actually changes
| M4B | OGG | |
|---|---|---|
| Chapters and resume position | Yes, keeps chapter markers and remembers where you stopped | No, plays as one continuous track |
| File size | Compact, similar to other compressed audio | Similar, sometimes a bit smaller at the same quality |
| Quality | Good, lossy compression | Good, lossy compression, with some added loss from re-encoding |
| Compatibility | Apple's audiobook app and most phones | Many non-Apple media players, Linux systems, and games |
| Metadata (author, narrator, cover art) | Yes, built in | Partial, basic tags only |
When to convert, and when not to
Convert M4B to OGG when you need the audio to play on non-Apple media players, Linux systems, games, or other software that doesn't read M4B.
Keep the M4B original if you want chapter navigation and to resume exactly where you left off, since OGG doesn't carry that structure.
Why not just use an online converter?
Audiobook files can run for many hours and often reveal exactly what you're reading or listening to, which some people would rather not hand to a server they don't control. Converting M4B to OGG through an online tool means uploading that entire file, and waiting for it to come back, before you can use it. Doing the conversion on your own computer keeps the file, and what it says about your reading habits, private.
Questions
Does converting M4B to OGG lose quality?
A little. Both formats are lossy, so re-encoding from one to the other adds a small amount of generation loss on top of what was already lost when the M4B was created.
Will I lose my audiobook's chapters?
Yes. OGG doesn't have the standardized chapter and bookmark structure that M4B audiobook apps rely on, so the result plays as one continuous track.
Why would someone convert an audiobook to OGG?
Mostly for compatibility. OGG plays natively in many non-Apple media players, Linux setups, and some games, none of which reliably read M4B.
Can I convert M4B to OGG without uploading the file?
Yes. A desktop app like Morphjet converts the file on your own computer, so a multi-hour audiobook never has to travel over your internet connection.
Morphjet runs this conversion and 2,747 others, all on your machine. Available now.
One-time purchase, no subscription. 14 days to change your mind.