.m4baudio/mp4

M4B (.m4b)

M4B is Apple's audiobook format based on AAC encoding. Supports chapter markers and bookmarking for audiobook playback.

Quick Facts

File Extension
.m4b
MIME Type
audio/mp4
Category
Audio
Full Name
M4B

What is M4B?

M4B is a multimedia file format developed by Apple specifically for audiobooks. It is based on the MPEG-4 container and uses AAC audio compression, ensuring high-quality sound while maintaining manageable file sizes. Unlike standard audio files, M4B files are designed to support advanced features essential for long-form listening, such as chapter markers and persistent bookmarking.

The format is widely supported within the Apple ecosystem, including iTunes, Apple Books, and iOS devices. This seamless integration allows users to pick up exactly where they left off across different devices. While primarily associated with Apple, M4B files can often be played on third-party media players that support AAC and MPEG-4 containers, making them a versatile choice for digital audiobook distribution.

Technical Specifications

DeveloperApple Inc.
First Released2005
TypeAudio Container
CompressionAAC
Max ResolutionN/A
Color DepthN/A

Pros & Cons

+Advantages

  • •Supports chapter navigation and bookmarking
  • •High-quality AAC audio compression
  • •Seamless integration with Apple ecosystem
  • •Optimized for long-form audio content

−Disadvantages

  • •Limited native support on non-Apple devices
  • •Potential DRM restrictions from iTunes Store
  • •Less universal than MP3 format

Common Use Cases

Distributing digital audiobooks

Storing podcasts with chapter markers

Archiving long-form audio lectures

Syncing listening progress across iOS devices

Convert from M4B

Convert .m4b files to other formats.

.m4b.jpg

Convert M4B (.m4b) files to JPEG (.jpg) format. Transform your M4B files to JPG quickly and easily with File ConverterX — completely free.

.m4b.png

Convert M4B (.m4b) files to PNG (.png) format. Transform your M4B files to PNG quickly and easily with File ConverterX — completely free.

.m4b.webp

Convert M4B (.m4b) files to WebP (.webp) format. Transform your M4B files to WEBP quickly and easily with File ConverterX — completely free.

.m4b.gif

Convert M4B (.m4b) files to GIF (.gif) format. Transform your M4B files to GIF quickly and easily with File ConverterX — completely free.

.m4b.mp4

Convert M4B (.m4b) files to MP4 (.mp4) format. Transform your M4B files to MP4 quickly and easily with File ConverterX — completely free.

.m4b.mp3

Convert M4B (.m4b) files to MP3 (.mp3) format. Transform your M4B files to MP3 quickly and easily with File ConverterX — completely free.

.m4b.wav

Convert M4B (.m4b) files to WAV (.wav) format. Transform your M4B files to WAV quickly and easily with File ConverterX — completely free.

.m4b.flac

Convert M4B (.m4b) files to FLAC (.flac) format. Transform your M4B files to FLAC quickly and easily with File ConverterX — completely free.

.m4b.avif

Convert M4B (.m4b) files to AVIF (.avif) format. Transform your M4B files to AVIF quickly and easily with File ConverterX — completely free.

.m4b.mov

Convert M4B (.m4b) files to MOV (.mov) format. Transform your M4B files to MOV quickly and easily with File ConverterX — completely free.

.m4b.mkv

Convert M4B (.m4b) files to MKV (.mkv) format. Transform your M4B files to MKV quickly and easily with File ConverterX — completely free.

.m4b.avi

Convert M4B (.m4b) files to AVI (.avi) format. Transform your M4B files to AVI quickly and easily with File ConverterX — completely free.

.m4b.ogg

Convert M4B (.m4b) files to OGG Vorbis (.ogg) format. Transform your M4B files to OGG quickly and easily with File ConverterX — completely free.

.m4b.aac

Convert M4B (.m4b) files to AAC (.aac) format. Transform your M4B files to AAC quickly and easily with File ConverterX — completely free.

.m4b.m4a

Convert M4B (.m4b) files to M4A (.m4a) format. Transform your M4B files to M4A quickly and easily with File ConverterX — completely free.

.m4b.tiff

Convert M4B (.m4b) files to TIFF (.tiff) format. Transform your M4B files to TIFF quickly and easily with File ConverterX — completely free.

.m4b.bmp

Convert M4B (.m4b) files to BMP (.bmp) format. Transform your M4B files to BMP quickly and easily with File ConverterX — completely free.

.m4b.xml

Convert M4B (.m4b) files to XML (.xml) format. Transform your M4B files to XML quickly and easily with File ConverterX — completely free.

.m4b.webm

Convert M4B (.m4b) files to WebM (.webm) format. Transform your M4B files to WEBM quickly and easily with File ConverterX — completely free.

.m4b.wmv

Convert M4B (.m4b) files to WMV (.wmv) format. Transform your M4B files to WMV quickly and easily with File ConverterX — completely free.

.m4b.wma

Convert M4B (.m4b) files to WMA (.wma) format. Transform your M4B files to WMA quickly and easily with File ConverterX — completely free.

.m4b.opus

Convert M4B (.m4b) files to Opus (.opus) format. Transform your M4B files to OPUS quickly and easily with File ConverterX — completely free.

.m4b.ico

Convert M4B (.m4b) files to ICO (.ico) format. Transform your M4B files to ICO quickly and easily with File ConverterX — completely free.

.m4b.jxl

Convert M4B (.m4b) files to JPEG XL (.jxl) format. Transform your M4B files to JXL quickly and easily with File ConverterX — completely free.

.m4b.apng

Convert M4B (.m4b) files to APNG (.apng) format. Transform your M4B files to APNG quickly and easily with File ConverterX — completely free.

.m4b.3gp

Convert M4B (.m4b) files to 3GP (.3gp) format. Transform your M4B files to 3GP quickly and easily with File ConverterX — completely free.

.m4b.m4v

Convert M4B (.m4b) files to M4V (.m4v) format. Transform your M4B files to M4V quickly and easily with File ConverterX — completely free.

.m4b.aiff

Convert M4B (.m4b) files to AIFF (.aiff) format. Transform your M4B files to AIFF quickly and easily with File ConverterX — completely free.

.m4b.3g2

Convert M4B (.m4b) files to 3G2 (.3g2) format. Transform your M4B files to 3G2 quickly and easily with File ConverterX — completely free.

.m4b.ac3

Convert M4B (.m4b) files to AC3 (.ac3) format. Transform your M4B files to AC3 quickly and easily with File ConverterX — completely free.

.m4b.amr

Convert M4B (.m4b) files to AMR (.amr) format. Transform your M4B files to AMR quickly and easily with File ConverterX — completely free.

.m4b.amv

Convert M4B (.m4b) files to AMV (.amv) format. Transform your M4B files to AMV quickly and easily with File ConverterX — completely free.

.m4b.asf

Convert M4B (.m4b) files to ASF (.asf) format. Transform your M4B files to ASF quickly and easily with File ConverterX — completely free.

.m4b.au

Convert M4B (.m4b) files to AU (.au) format. Transform your M4B files to AU quickly and easily with File ConverterX — completely free.

.m4b.caf

Convert M4B (.m4b) files to CAF (.caf) format. Transform your M4B files to CAF quickly and easily with File ConverterX — completely free.

.m4b.dfpwm

Convert M4B (.m4b) files to DFPWM (.dfpwm) format. Transform your M4B files to DFPWM quickly and easily with File ConverterX — completely free.

.m4b.dpx

Convert M4B (.m4b) files to DPX (.dpx) format. Transform your M4B files to DPX quickly and easily with File ConverterX — completely free.

.m4b.dts

Convert M4B (.m4b) files to DTS (.dts) format. Transform your M4B files to DTS quickly and easily with File ConverterX — completely free.

.m4b.dv

Convert M4B (.m4b) files to DV (.dv) format. Transform your M4B files to DV quickly and easily with File ConverterX — completely free.

.m4b.eac3

Convert M4B (.m4b) files to E-AC3 (.eac3) format. Transform your M4B files to EAC3 quickly and easily with File ConverterX — completely free.

.m4b.exr

Convert M4B (.m4b) files to OpenEXR (.exr) format. Transform your M4B files to EXR quickly and easily with File ConverterX — completely free.

.m4b.f4v

Convert M4B (.m4b) files to F4V (.f4v) format. Transform your M4B files to F4V quickly and easily with File ConverterX — completely free.

.m4b.fits

Convert M4B (.m4b) files to FITS (.fits) format. Transform your M4B files to FITS quickly and easily with File ConverterX — completely free.

.m4b.flv

Convert M4B (.m4b) files to FLV (.flv) format. Transform your M4B files to FLV quickly and easily with File ConverterX — completely free.

.m4b.gsm

Convert M4B (.m4b) files to GSM (.gsm) format. Transform your M4B files to GSM quickly and easily with File ConverterX — completely free.

.m4b.gxf

Convert M4B (.m4b) files to GXF (.gxf) format. Transform your M4B files to GXF quickly and easily with File ConverterX — completely free.

.m4b.hdr

Convert M4B (.m4b) files to HDR (.hdr) format. Transform your M4B files to HDR quickly and easily with File ConverterX — completely free.

.m4b.ivf

Convert M4B (.m4b) files to IVF (.ivf) format. Transform your M4B files to IVF quickly and easily with File ConverterX — completely free.

.m4b.j2k

Convert M4B (.m4b) files to JPEG 2000 (.j2k) format. Transform your M4B files to J2K quickly and easily with File ConverterX — completely free.

.m4b.jp2

Convert M4B (.m4b) files to JPEG 2000 (.jp2) format. Transform your M4B files to JP2 quickly and easily with File ConverterX — completely free.

.m4b.m2ts

Convert M4B (.m4b) files to M2TS (.m2ts) format. Transform your M4B files to M2TS quickly and easily with File ConverterX — completely free.

.m4b.mlp

Convert M4B (.m4b) files to MLP (.mlp) format. Transform your M4B files to MLP quickly and easily with File ConverterX — completely free.

.m4b.mmf

Convert M4B (.m4b) files to SMAF (.mmf) format. Transform your M4B files to MMF quickly and easily with File ConverterX — completely free.

.m4b.mp2

Convert M4B (.m4b) files to MP2 (.mp2) format. Transform your M4B files to MP2 quickly and easily with File ConverterX — completely free.

.m4b.mpeg

Convert M4B (.m4b) files to MPEG (.mpeg) format. Transform your M4B files to MPEG quickly and easily with File ConverterX — completely free.

.m4b.mts

Convert M4B (.m4b) files to MTS (.mts) format. Transform your M4B files to MTS quickly and easily with File ConverterX — completely free.

.m4b.mxf

Convert M4B (.m4b) files to MXF (.mxf) format. Transform your M4B files to MXF quickly and easily with File ConverterX — completely free.

.m4b.nut

Convert M4B (.m4b) files to NUT (.nut) format. Transform your M4B files to NUT quickly and easily with File ConverterX — completely free.

.m4b.oga

Convert M4B (.m4b) files to OGA (.oga) format. Transform your M4B files to OGA quickly and easily with File ConverterX — completely free.

.m4b.ogv

Convert M4B (.m4b) files to OGV (.ogv) format. Transform your M4B files to OGV quickly and easily with File ConverterX — completely free.

.m4b.pam

Convert M4B (.m4b) files to PAM (.pam) format. Transform your M4B files to PAM quickly and easily with File ConverterX — completely free.

.m4b.pbm

Convert M4B (.m4b) files to PBM (.pbm) format. Transform your M4B files to PBM quickly and easily with File ConverterX — completely free.

.m4b.pcm

Convert M4B (.m4b) files to PCM (.pcm) format. Transform your M4B files to PCM quickly and easily with File ConverterX — completely free.

.m4b.pcx

Convert M4B (.m4b) files to PCX (.pcx) format. Transform your M4B files to PCX quickly and easily with File ConverterX — completely free.

.m4b.pgm

Convert M4B (.m4b) files to PGM (.pgm) format. Transform your M4B files to PGM quickly and easily with File ConverterX — completely free.

.m4b.ppm

Convert M4B (.m4b) files to PPM (.ppm) format. Transform your M4B files to PPM quickly and easily with File ConverterX — completely free.

.m4b.qoi

Convert M4B (.m4b) files to QOI (.qoi) format. Transform your M4B files to QOI quickly and easily with File ConverterX — completely free.

.m4b.ra

Convert M4B (.m4b) files to RealAudio (.ra) format. Transform your M4B files to RA quickly and easily with File ConverterX — completely free.

.m4b.rm

Convert M4B (.m4b) files to RealMedia (.rm) format. Transform your M4B files to RM quickly and easily with File ConverterX — completely free.

.m4b.roq

Convert M4B (.m4b) files to RoQ (.roq) format. Transform your M4B files to ROQ quickly and easily with File ConverterX — completely free.

.m4b.sbc

Convert M4B (.m4b) files to SBC (.sbc) format. Transform your M4B files to SBC quickly and easily with File ConverterX — completely free.

.m4b.sgi

Convert M4B (.m4b) files to SGI (.sgi) format. Transform your M4B files to SGI quickly and easily with File ConverterX — completely free.

.m4b.sox

Convert M4B (.m4b) files to SoX (.sox) format. Transform your M4B files to SOX quickly and easily with File ConverterX — completely free.

.m4b.spx

Convert M4B (.m4b) files to Speex (.spx) format. Transform your M4B files to SPX quickly and easily with File ConverterX — completely free.

.m4b.swf

Convert M4B (.m4b) files to SWF (.swf) format. Transform your M4B files to SWF quickly and easily with File ConverterX — completely free.

.m4b.tga

Convert M4B (.m4b) files to TGA (.tga) format. Transform your M4B files to TGA quickly and easily with File ConverterX — completely free.

.m4b.ts

Convert M4B (.m4b) files to TS (.ts) format. Transform your M4B files to TS quickly and easily with File ConverterX — completely free.

.m4b.tta

Convert M4B (.m4b) files to TTA (.tta) format. Transform your M4B files to TTA quickly and easily with File ConverterX — completely free.

.m4b.vob

Convert M4B (.m4b) files to VOB (.vob) format. Transform your M4B files to VOB quickly and easily with File ConverterX — completely free.

.m4b.voc

Convert M4B (.m4b) files to VOC (.voc) format. Transform your M4B files to VOC quickly and easily with File ConverterX — completely free.

.m4b.w64

Convert M4B (.m4b) files to W64 (.w64) format. Transform your M4B files to W64 quickly and easily with File ConverterX — completely free.

.m4b.wbmp

Convert M4B (.m4b) files to WBMP (.wbmp) format. Transform your M4B files to WBMP quickly and easily with File ConverterX — completely free.

.m4b.wv

Convert M4B (.m4b) files to WavPack (.wv) format. Transform your M4B files to WV quickly and easily with File ConverterX — completely free.

.m4b.xbm

Convert M4B (.m4b) files to XBM (.xbm) format. Transform your M4B files to XBM quickly and easily with File ConverterX — completely free.

.m4b.xwd

Convert M4B (.m4b) files to XWD (.xwd) format. Transform your M4B files to XWD quickly and easily with File ConverterX — completely free.

.m4b.y4m

Convert M4B (.m4b) files to YUV4MPEG (.y4m) format. Transform your M4B files to Y4M quickly and easily with File ConverterX — completely free.

Convert to M4B

Convert other files to .m4b format.

.jpg.m4b

Convert JPEG (.jpg) files to M4B (.m4b) format. Transform your JPG files to M4B quickly and easily with File ConverterX — completely free.

.png.m4b

Convert PNG (.png) files to M4B (.m4b) format. Transform your PNG files to M4B quickly and easily with File ConverterX — completely free.

.webp.m4b

Convert WebP (.webp) files to M4B (.m4b) format. Transform your WEBP files to M4B quickly and easily with File ConverterX — completely free.

.gif.m4b

Convert GIF (.gif) files to M4B (.m4b) format. Transform your GIF files to M4B quickly and easily with File ConverterX — completely free.

.mp4.m4b

Convert MP4 (.mp4) files to M4B (.m4b) format. Transform your MP4 files to M4B quickly and easily with File ConverterX — completely free.

.mp3.m4b

Convert MP3 (.mp3) files to M4B (.m4b) format. Transform your MP3 files to M4B quickly and easily with File ConverterX — completely free.

.wav.m4b

Convert WAV (.wav) files to M4B (.m4b) format. Transform your WAV files to M4B quickly and easily with File ConverterX — completely free.

.flac.m4b

Convert FLAC (.flac) files to M4B (.m4b) format. Transform your FLAC files to M4B quickly and easily with File ConverterX — completely free.

.svg.m4b

Convert SVG (.svg) files to M4B (.m4b) format. Transform your SVG files to M4B quickly and easily with File ConverterX — completely free.

.avif.m4b

Convert AVIF (.avif) files to M4B (.m4b) format. Transform your AVIF files to M4B quickly and easily with File ConverterX — completely free.

.mov.m4b

Convert MOV (.mov) files to M4B (.m4b) format. Transform your MOV files to M4B quickly and easily with File ConverterX — completely free.

.mkv.m4b

Convert MKV (.mkv) files to M4B (.m4b) format. Transform your MKV files to M4B quickly and easily with File ConverterX — completely free.

.avi.m4b

Convert AVI (.avi) files to M4B (.m4b) format. Transform your AVI files to M4B quickly and easily with File ConverterX — completely free.

.ogg.m4b

Convert OGG Vorbis (.ogg) files to M4B (.m4b) format. Transform your OGG files to M4B quickly and easily with File ConverterX — completely free.

.aac.m4b

Convert AAC (.aac) files to M4B (.m4b) format. Transform your AAC files to M4B quickly and easily with File ConverterX — completely free.

.m4a.m4b

Convert M4A (.m4a) files to M4B (.m4b) format. Transform your M4A files to M4B quickly and easily with File ConverterX — completely free.

.tiff.m4b

Convert TIFF (.tiff) files to M4B (.m4b) format. Transform your TIFF files to M4B quickly and easily with File ConverterX — completely free.

.bmp.m4b

Convert BMP (.bmp) files to M4B (.m4b) format. Transform your BMP files to M4B quickly and easily with File ConverterX — completely free.

.txt.m4b

Convert Plain Text (.txt) files to M4B (.m4b) format. Transform your TXT files to M4B quickly and easily with File ConverterX — completely free.

.stl.m4b

Convert STL (.stl) files to M4B (.m4b) format. Transform your STL files to M4B quickly and easily with File ConverterX — completely free.

.webm.m4b

Convert WebM (.webm) files to M4B (.m4b) format. Transform your WEBM files to M4B quickly and easily with File ConverterX — completely free.

.wma.m4b

Convert WMA (.wma) files to M4B (.m4b) format. Transform your WMA files to M4B quickly and easily with File ConverterX — completely free.

.opus.m4b

Convert Opus (.opus) files to M4B (.m4b) format. Transform your OPUS files to M4B quickly and easily with File ConverterX — completely free.

.ico.m4b

Convert ICO (.ico) files to M4B (.m4b) format. Transform your ICO files to M4B quickly and easily with File ConverterX — completely free.

.jxl.m4b

Convert JPEG XL (.jxl) files to M4B (.m4b) format. Transform your JXL files to M4B quickly and easily with File ConverterX — completely free.

.apng.m4b

Convert APNG (.apng) files to M4B (.m4b) format. Transform your APNG files to M4B quickly and easily with File ConverterX — completely free.

.3gp.m4b

Convert 3GP (.3gp) files to M4B (.m4b) format. Transform your 3GP files to M4B quickly and easily with File ConverterX — completely free.

.m4v.m4b

Convert M4V (.m4v) files to M4B (.m4b) format. Transform your M4V files to M4B quickly and easily with File ConverterX — completely free.

.aiff.m4b

Convert AIFF (.aiff) files to M4B (.m4b) format. Transform your AIFF files to M4B quickly and easily with File ConverterX — completely free.

.3g2.m4b

Convert 3G2 (.3g2) files to M4B (.m4b) format. Transform your 3G2 files to M4B quickly and easily with File ConverterX — completely free.

.ac3.m4b

Convert AC3 (.ac3) files to M4B (.m4b) format. Transform your AC3 files to M4B quickly and easily with File ConverterX — completely free.

.amf.m4b

Convert AMF (.amf) files to M4B (.m4b) format. Transform your AMF files to M4B quickly and easily with File ConverterX — completely free.

.amr.m4b

Convert AMR (.amr) files to M4B (.m4b) format. Transform your AMR files to M4B quickly and easily with File ConverterX — completely free.

.asf.m4b

Convert ASF (.asf) files to M4B (.m4b) format. Transform your ASF files to M4B quickly and easily with File ConverterX — completely free.

.au.m4b

Convert AU (.au) files to M4B (.m4b) format. Transform your AU files to M4B quickly and easily with File ConverterX — completely free.

.caf.m4b

Convert CAF (.caf) files to M4B (.m4b) format. Transform your CAF files to M4B quickly and easily with File ConverterX — completely free.

.dds.m4b

Convert DDS (.dds) files to M4B (.m4b) format. Transform your DDS files to M4B quickly and easily with File ConverterX — completely free.

.dfpwm.m4b

Convert DFPWM (.dfpwm) files to M4B (.m4b) format. Transform your DFPWM files to M4B quickly and easily with File ConverterX — completely free.

.dts.m4b

Convert DTS (.dts) files to M4B (.m4b) format. Transform your DTS files to M4B quickly and easily with File ConverterX — completely free.

.dv.m4b

Convert DV (.dv) files to M4B (.m4b) format. Transform your DV files to M4B quickly and easily with File ConverterX — completely free.

.eac3.m4b

Convert E-AC3 (.eac3) files to M4B (.m4b) format. Transform your EAC3 files to M4B quickly and easily with File ConverterX — completely free.

.f4v.m4b

Convert F4V (.f4v) files to M4B (.m4b) format. Transform your F4V files to M4B quickly and easily with File ConverterX — completely free.

.fits.m4b

Convert FITS (.fits) files to M4B (.m4b) format. Transform your FITS files to M4B quickly and easily with File ConverterX — completely free.

.flv.m4b

Convert FLV (.flv) files to M4B (.m4b) format. Transform your FLV files to M4B quickly and easily with File ConverterX — completely free.

.gsm.m4b

Convert GSM (.gsm) files to M4B (.m4b) format. Transform your GSM files to M4B quickly and easily with File ConverterX — completely free.

.gxf.m4b

Convert GXF (.gxf) files to M4B (.m4b) format. Transform your GXF files to M4B quickly and easily with File ConverterX — completely free.

.ivf.m4b

Convert IVF (.ivf) files to M4B (.m4b) format. Transform your IVF files to M4B quickly and easily with File ConverterX — completely free.

.j2k.m4b

Convert JPEG 2000 (.j2k) files to M4B (.m4b) format. Transform your J2K files to M4B quickly and easily with File ConverterX — completely free.

.mlp.m4b

Convert MLP (.mlp) files to M4B (.m4b) format. Transform your MLP files to M4B quickly and easily with File ConverterX — completely free.

.mmf.m4b

Convert SMAF (.mmf) files to M4B (.m4b) format. Transform your MMF files to M4B quickly and easily with File ConverterX — completely free.

.mp2.m4b

Convert MP2 (.mp2) files to M4B (.m4b) format. Transform your MP2 files to M4B quickly and easily with File ConverterX — completely free.

.mpeg.m4b

Convert MPEG (.mpeg) files to M4B (.m4b) format. Transform your MPEG files to M4B quickly and easily with File ConverterX — completely free.

.mxf.m4b

Convert MXF (.mxf) files to M4B (.m4b) format. Transform your MXF files to M4B quickly and easily with File ConverterX — completely free.

.nut.m4b

Convert NUT (.nut) files to M4B (.m4b) format. Transform your NUT files to M4B quickly and easily with File ConverterX — completely free.

.pam.m4b

Convert PAM (.pam) files to M4B (.m4b) format. Transform your PAM files to M4B quickly and easily with File ConverterX — completely free.

.pbm.m4b

Convert PBM (.pbm) files to M4B (.m4b) format. Transform your PBM files to M4B quickly and easily with File ConverterX — completely free.

.pcx.m4b

Convert PCX (.pcx) files to M4B (.m4b) format. Transform your PCX files to M4B quickly and easily with File ConverterX — completely free.

.pgm.m4b

Convert PGM (.pgm) files to M4B (.m4b) format. Transform your PGM files to M4B quickly and easily with File ConverterX — completely free.

.ppm.m4b

Convert PPM (.ppm) files to M4B (.m4b) format. Transform your PPM files to M4B quickly and easily with File ConverterX — completely free.

.psd.m4b

Convert PSD (.psd) files to M4B (.m4b) format. Transform your PSD files to M4B quickly and easily with File ConverterX — completely free.

.rm.m4b

Convert RealMedia (.rm) files to M4B (.m4b) format. Transform your RM files to M4B quickly and easily with File ConverterX — completely free.

.roq.m4b

Convert RoQ (.roq) files to M4B (.m4b) format. Transform your ROQ files to M4B quickly and easily with File ConverterX — completely free.

.sbc.m4b

Convert SBC (.sbc) files to M4B (.m4b) format. Transform your SBC files to M4B quickly and easily with File ConverterX — completely free.

.sgi.m4b

Convert SGI (.sgi) files to M4B (.m4b) format. Transform your SGI files to M4B quickly and easily with File ConverterX — completely free.

.sox.m4b

Convert SoX (.sox) files to M4B (.m4b) format. Transform your SOX files to M4B quickly and easily with File ConverterX — completely free.

.stp.m4b

Convert STEP (.stp) files to M4B (.m4b) format. Transform your STP files to M4B quickly and easily with File ConverterX — completely free.

.swf.m4b

Convert SWF (.swf) files to M4B (.m4b) format. Transform your SWF files to M4B quickly and easily with File ConverterX — completely free.

.tta.m4b

Convert TTA (.tta) files to M4B (.m4b) format. Transform your TTA files to M4B quickly and easily with File ConverterX — completely free.

.voc.m4b

Convert VOC (.voc) files to M4B (.m4b) format. Transform your VOC files to M4B quickly and easily with File ConverterX — completely free.

.w64.m4b

Convert W64 (.w64) files to M4B (.m4b) format. Transform your W64 files to M4B quickly and easily with File ConverterX — completely free.

.wv.m4b

Convert WavPack (.wv) files to M4B (.m4b) format. Transform your WV files to M4B quickly and easily with File ConverterX — completely free.

.y4m.m4b

Convert YUV4MPEG (.y4m) files to M4B (.m4b) format. Transform your Y4M files to M4B quickly and easily with File ConverterX — completely free.

Frequently Asked Questions

M4B is designed for audiobooks with chapters and bookmarks, while M4A is for standard music files.

Need to convert M4B files?

File ConverterX supports converting .m4b files to and from dozens of formats — completely free.

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