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Convert MKV to CAF

Extract the audio from MKV videos and save it as CAF — ideal for iOS app sounds and Apple developer workflows.

  • No upload — 100% private
  • Fast, lossless when possible
  • Free & unlimited
  • Works on iPhone & Android

    Quality
    Advanced options
    Trim (optional)
    Use minutes:seconds, e.g. 1:05.5

    How to convert MKV to CAF

    1. 1

      Tap Choose files and select one or more MKV files (or drag them in).

    2. 2

      Check that CAF is selected. Use Advanced options for bitrate, channels or trimming.

    3. 3

      Press Convert. Everything happens on your device — no upload, no waiting in a queue.

    4. 4

      Your CAF downloads automatically. Converting several files? Grab them all as a ZIP.

    MKV vs CAF

    Only the sound is kept — the picture is dropped, so the CAF file is far smaller than the MKV video.

    MKVCAF
    Full nameMatroska VideoCore Audio Format
    TypeVideoAudio
    CompressionLossyLossless
    Developed byMatroska.orgApple
    Introduced20022005
    Plays on iPhone✕ No✓ Yes
    Plays on Android◐ Partly / with an app✕ No
    Plays on Windows✓ Yes✕ No
    Plays on Mac◐ Partly / with an app✓ Yes

    About MKV and CAF

    MKV: MKV is a flexible open container that can hold unlimited video, audio and subtitle tracks. It is popular for movies and anime but isn't supported by iPhone or most TVs out of the box.

    CAF: CAF is Apple's flexible audio container used inside iOS and macOS apps and by GarageBand. Files can be any length and hold many codecs.

    Frequently asked questions

    How do I convert MKV to CAF on my phone?
    Open this page in your phone's browser (Safari, Chrome, Samsung Internet), tap Choose files, pick your MKV, make sure CAF is selected and tap Convert. The CAF file is saved to your Downloads.
    Will converting MKV to CAF reduce quality?
    Only the sound is kept — the picture is dropped, so the CAF file is far smaller than the MKV video.
    Can I convert only part of the MKV?
    Yes. Open Advanced options → Trim and enter a start and end time.
    Is this MKV to CAF converter free?
    Yes — completely free with no limits on the number of files, no watermark and no account. The site is supported by ads.
    Are my files uploaded to a server?
    No. The converter runs inside your browser using WebAssembly, so your files never leave your device. That's also why it works for private and confidential recordings.

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    Convert MKV to other formats

    MKV to MP4MKV to MOVMKV to WEBMMKV to AVIMKV to FLVMKV to WMVMKV to 3GPMKV to M4VMKV to MPGMKV to TSMKV to GIFMKV to MP3MKV to M4AMKV to M4RMKV to AACMKV to ALACMKV to WAVMKV to FLACMKV to OGGMKV to OPUSMKV to WEBAMKV to WMAMKV to AIFFMKV to AC3

    Convert other formats to CAF

    MP3 to CAFM4A to CAFM4R to CAFAAC to CAFALAC to CAFWAV to CAFFLAC to CAFOGG to CAFOPUS to CAFWEBA to CAFWMA to CAFAIFF to CAFAC3 to CAFAMR to CAF3GA to CAFAPE to CAFMP4 to CAFMOV to CAFWEBM to CAFAVI to CAFFLV to CAFWMV to CAF3GP to CAFM4V to CAFMPG to CAFTS to CAFGIF to CAFMTS to CAFVOB to CAFHEVC to CAFRMVB to CAF

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