Question 1

How do I convert an MKV file to AAC?

Accepted Answer

Drag your MKV file onto the box above, or click Select file to choose it. Click Convert and wait for the progress bar to finish. Click Download to save the AAC file.

Question 2

Is AAC the right format for my MKV video?

Accepted Answer

Choose AAC only if an app or device asks for .aac files. An .aac file holds the same kind of sound as an M4A file without the container around it. Fewer apps open .aac files. For most uses, MKV to M4A is the better choice.

Question 3

Does converting to AAC lose quality?

Accepted Answer

It depends on the sound in your MKV file. AAC sound is copied into an AAC file exactly as it is, with no quality loss. Other formats, such as Opus or Dolby Digital, are converted to AAC at 192 kbps, which is high quality for music and speech.

Question 4

Is 5.1 surround sound kept?

Accepted Answer

Yes. 5.1 sound stays as six channels in the AAC file. Phones and most headphones play it mixed down to stereo.

Question 5

Why isn't my video accepted?

Accepted Answer

This page accepts MKV files, whose names end in .mkv. Most other videos are MP4, MOV or WebM files. Check the end of the file name and use the matching converter: MP4 to AAC, MOV to AAC or WebM to AAC.

Convert MKV to AAC

Frequently Asked Questions

Frequently Asked Questions

How do I convert an MKV file to AAC?

Is AAC the right format for my MKV video?

Does converting to AAC lose quality?

How big will the AAC file be?

Which sound is used if the video has more than one audio track?

Is 5.1 surround sound kept?

Can I convert films with DTS or Dolby TrueHD sound?

Why isn't my video accepted?

Does the AAC file keep the title, artist and cover art?

Can I convert only part of the video?

Is it free, and is my video uploaded?

Can I convert a YouTube video or a link?

Does it work on phones, and is there a size limit?

What if my video has no sound or won't convert?