Convert M4A to MKV

M4A in, MKV out: free, no signup, and both files delete themselves within an hour.

Drop your file here to upload

M4A MKV

Drop your M4A here

Pick the video format you need: free, private, gone in an hour.
  • Free, no signup
  • No watermark, ever
  • Files auto-delete in 1 hour
  • Nothing to install

Flippy turns M4A into MKV for free: upload the M4A above and download it wrapped as MKV, sound untouched. No signup, and both files delete themselves within an hour.

It sounds backwards, but M4A to MKV is a real need: plenty of platforms and tools only accept video, so Flippy re-packs your M4A audio inside an MKV wrapper. Where MKV accepts your M4A's codec the sound crosses over untouched; where it doesn't, it's re-encoded once. The MKV that comes out is built for high-quality rips and archives with multiple audio and subtitle tracks.

A classic M4A to MKV job: iPhone voice memos and iTunes tracks, bound for the archive, with every audio and subtitle track kept.

Why flip M4A to MKV

M4A is AAC in Apple's favorite outfit: the audio-only MP4 your iPhone speaks natively. It was born in 2003, popularized by Apple's iTunes Store, and its real weak spot is older Windows software and stubborn car stereos that expect a .mp3.

MKV is the format that hoards: video, a dozen audio tracks and every subtitle, all in one box. The Matroska container: it will hold practically any codec ever made. That makes it the right destination when what you need is high-quality rips and archives with multiple audio and subtitle tracks.

How to convert M4A to MKV

  1. 1

    Drop your M4A file into the flipper above, or click to browse for it.

  2. 2

    Check the output format: MKV is already selected for you.

  3. 3

    Hit Convert, give it a moment, then download your new MKV.

Best settings for M4A to MKV

Settings for M4A to MKV: none to pick. Where the MKV container accepts your M4A's audio codec, the stream is copied bit for bit; where it doesn't, Flippy re-encodes it once and leaves the levels alone.

M4A vs MKV, side by side

M4A MKV
Born 2003, popularized by Apple's iTunes Store 2002, the open-source Matroska project
Type audio · lossy video · container
Best for sounding great anywhere in the Apple ecosystem high-quality rips and archives with multiple audio and subtitle tracks
Weak spot older Windows software and stubborn car stereos that expect a .mp3 playing on TVs, iPhones and editors that never learned to open the box
Typical size like AAC: better-than-MP3 sound at about 1 MB per minute for video content, as big as whatever you put inside: movie files often run to several gigabytes; wrapping audio alone stays about the size of the M4A
Plays on iPhone, Mac and iTunes natively; most modern Android and Windows apps too. VLC and desktop players love it; smart TVs, Apple devices and editors often don't.

Questions people ask

Will converting M4A to MKV lose quality?

No. Wrapping audio in an MKV container doesn't touch the sound itself: it's the same stream in a different box.

Will the MKV file be bigger or smaller than my M4A?

About the same, plus a sliver of container overhead. The audio stream is unchanged; MKV just adds a video-shaped envelope.

Where will the MKV file play?

VLC and desktop players love it; smart TVs, Apple devices and editors often don't. That's the usual reason people leave M4A behind: MKV simply opens in more of the places that matter.

How long does M4A to MKV conversion take?

Seconds for most M4A files: there are no pictures to encode, so wrapping the audio as MKV is nearly as fast as copying it. Both files auto-delete within an hour.

More ways to handle these formats

M4A conversion MKV Converter Shrink MKV Split MKV Turn MKV into GIF MKV Resizer M4A Merger

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