Free online FLAC-to-M4B converter — upload a FLAC file and download a M4B. Fast, private, no signup.
Drop your FLAC 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 FLAC 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.
Free Lossless Audio Codec. MPEG-4 audiobook (AAC, with chapter support).
Convert FLAC to: MP3 · WAV · M4A · AAC · AC3 · AIFF · M4R · OGG · OPUS · WV
Convert to M4B from: AAC · AC3 · AIFF · AMR · APE · M4A · M4R · MP3 · OGG · OPUS