1. Upload your M4A file
Start by dragging and dropping your M4A file into the upload area, or click to browse your device and select your file in the list.
M4A to MKV Converter Online
Convert your M4A (.m4a) file to MKV (.mkv) in seconds straight from your browser. No installs. No watermarks. 100 % free.
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Convert from M4A to MKV but also 47+ other formats.
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How to convert M4A to MKV?
2. Choose MKV format
Next, pick MKV as the format you’d like to convert your video into. Alternatively, we support +47 formats that you can choose from. When you’re ready, hit the Convert button.
3. Download your converted MKV
Once the conversion is complete, you’ll get a download link right away. Just click to save the file to your device. It’s fast, easy, and doesn’t require any software installation.
What is a M4A file?
.m4a is the generic extension for audio‑only MP4 files. Inside, you will typically find AAC or ALAC streams plus metadata for chapters, cover art, and lyrics. The format provides gapless playback, efficient compression, and wide ecosystem support. Apple coined .m4a in 2001 to distinguish music downloads from copy‑protected .m4p tracks sold on the iTunes Store. Because MP4’s audio profiles required no licence fees, many podcasters and game developers adopted .m4a for better quality than MP3 at the same bit‑rate. Today .m4a is recognised by Android, Windows, and most car infotainment systems.
What is a MKV file?
Matroska Video (MKV) is a flexible open container that can accommodate virtually any codec, multiple subtitle tracks, and chapter points. It is built on EBML (Extensible Binary Meta Language), a binary cousin of XML, allowing unlimited, self‑describing elements. The project began in 2002 after developer Steve Lhomme forked the failed MCF container. With the explosion of H.264 ‘fansubs’, MKV became the default wrapper for anime communities, bundling soft‑subs and styled karaoke effects. In 2013 Matroska was standardised within the IETF as the basis for WebM, cementing its longevity.
Free Online M4A to MKV Converter
Need to convert your audio file from M4A to MKV? It’s simple. Just upload your file, choose the output format, and click ‘Convert’. That’s it — no downloads, no complicated software, and no hidden costs. Our tool is designed to be fast, secure, and completely free, so you can turn your files into the format you need in seconds.
Whether you’re converting audio for sharing, editing, or playback on different devices, our converter ensures high-quality output every time. After your conversion, you’ll also have the option to transcribe video to text, making it easy to turn your MKV files into accurate, editable text in just a few clicks.
Frequently Asked Questions
How to open a M4A file?
Play .m4a files in iTunes/Music, Groove, or any Bluetooth speaker that accepts AAC. DAWs like Logic Pro and Audition decode on import. If an older device refuses the extension, simply rename to .mp4 both refer to the same container.
How to open a MKV file?
VLC, MPV, and Kodi handle MKV flawlessly on every OS. Editing suites such as DaVinci Resolve import common codecs like H.264 or ProRes within MKV, but for delivery you may still export MP4. MKVToolNix lets you split, merge, and tag tracks without re‑encoding.
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