File Convert

Convert M4B to M4A

Free online M4B-to-M4A converter — upload a M4B file and download a M4A. Fast, private, no signup.

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M4B vs M4A

M4B

MPEG-4 audiobook (AAC, with chapter support).

About M4B ↗

M4A

MPEG-4 audio container (AAC/ALAC).

About M4A ↗

M4B to M4A: frequently asked questions

How do I convert M4B to M4A?

Drop your M4B file into the converter above — we auto-detect the real format from its bytes, convert it, and give you a M4A to download. No software to install.

Is the M4B to M4A converter free?

Yes. Convert M4B to M4A for free right in your browser, with no account needed to get started.

Is it safe and private?

Your file is transferred over an encrypted connection and anonymous uploads are temporary. You can also view and strip metadata (location, device, author) before you download.

What's the difference between M4B and M4A?

MPEG-4 audiobook (AAC, with chapter support). MPEG-4 audio container (AAC/ALAC).

Related conversions

Convert M4B to: MP3 · WAV · FLAC · AAC · AC3 · AIFF · M4R · OGG · OPUS · WV

Convert to M4A from: AAC · AC3 · AIFF · AMR · APE · FLAC · M4R · MP3 · OGG · OPUS

Browse all supported formats →