Step 1: Add your MKV files using the button above or by carry and plop.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Pull your converted M4R files.
MKV to M4R Conversion FAQ
How do I extract the audio from an MKV file as M4R?
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Upload the MKV file and we demux the audio track, then transcode to M4R. There is no second video pass and no quality loss beyond the M4R codec itself.
What audio bitrate does the M4R file use?
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A lossy M4R is encoded at 192 kbps by default. The Audio Quality setting also offers 320 kbps for the best quality and 128 kbps for a smaller file. A lossless M4R (WAV, FLAC) ignores the bitrate and keeps every sample.
Will I lose audio quality going from MKV to M4R?
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If the M4R format is lossless (WAV, FLAC), you keep every sample exactly. If M4R is lossy (MP3, AAC, OGG), the M4R codec recompresses — quality depends on the bitrate and source audio. We default to 192 kbps which is transparent for almost all content.
Does the extracted M4R keep the original sample rate?
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By default yes — a 48 kHz audio track in MKV becomes 48 kHz in M4R. If you need 44.1 kHz (CD-quality) for compatibility with older players, the advanced options include a sample-rate dropdown.
Can I extract audio from multiple MKV files to M4R in one batch?
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Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
How long does extracting M4R from an MKV file take?
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It depends on the size and length of the file. Small documents and images are usually ready quickly. Long videos take the longest, because most video conversions re-encode every frame.
Can I extract just a section of the MKV audio as M4R?
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Not in this tool — extract the full audio as M4R here, then use /audio-trim/ or /audio-cutter/ to clip the section. The two-step path is usually faster than a combined operation.
Is my MKV file private during audio extraction?
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Yes. Uploaded MKV files are processed on our own conversion servers, no person reviews them, and they are never shared. The upload and the converted M4R are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.
Why does my M4R file have silent gaps?
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Usually the MKV carries more than one audio track and the one that was converted is silent or secondary. The converter picks one audio track automatically, normally the main one, and this page has no setting to choose a different track. If the wrong one comes out, remux the MKV with the track you want first (VLC or ffmpeg can do this) and convert it again.
Does the extracted M4R play on iPhone / Android / car stereo?
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MP3 plays almost everywhere. AAC plays on Apple devices, most Android phones and Sonos. OGG and Opus need a recent player on iOS but play in Chrome, Firefox and VLC. There are no device presets on this page, so choose the target format your player supports.
