Free online CAF-to-M4B converter — upload a CAF file and download a M4B. Fast, private, no signup.
Drop your CAF file into the converter above — we auto-detect the real format from its bytes, convert it, and give you a M4B to download. No software to install.
Yes. Convert CAF to M4B for free right in your browser, with no account needed to get started.
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.
Core Audio Format — Apple's container (here written with lossless ALAC). MPEG-4 audiobook (AAC, with chapter support).
Convert CAF to: MP3 · WAV · FLAC · M4A · AAC · AC3 · AIFF · AU · DTS · M4R
Convert to M4B from: AAC · AC3 · AIFF · AMR · APE · AU · DFF · DSF · DTS · FLAC