Convert MKV to AAC
Pull the soundtrack out of any MKV video and save it as AAC in seconds. Conversion happens inside your browser, so even large or private videos are never uploaded.
Drop MKV files here
MP3, WAV, FLAC, M4A, OGG, OPUS, AAC, AIFF, WMA, AMR, MP4, MOV & more · Processed on your device - nothing is uploaded
How to convert MKV to AAC
- Click "Choose files" or drag your MKV videos onto the page.
- Make sure "AAC" is selected as the output format (192 kbps is a good default).
- Optionally click Edit to trim, adjust volume or add effects.
- Click Convert, then Download your AAC files.
Why convert MKV to AAC?
AAC files are much smaller than video and play on any music player, phone or car stereo.
AAC is best for streaming, broadcast and devices that need a raw AAC stream. Most phones, browsers, smart TVs and media players.
Will I lose quality?
The audio is decoded from the MKV video and encoded to AAC. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for AAC.
MKV vs AAC
| MKV | AAC | |
|---|---|---|
| Full name | Matroska Video | Advanced Audio Coding (ADTS) |
| Type | video | lossy |
| Best for | films, TV recordings and archives | streaming, broadcast and devices that need a raw AAC stream |
| Typical size | varies | ~1.4 MB at 192 kbps per minute |
| Compatibility | VLC, Plex, Kodi, most modern players. | Most phones, browsers, smart TVs and media players. |
| Developed by | - | MPEG (1997) |
MKV to AAC: questions
How do I convert MKV to AAC?
Open this page, add your MKV file, make sure AAC is selected as the output format and click Convert. Your AAC file is ready to download in seconds.
Will converting MKV to AAC lose quality?
The audio is decoded from the MKV video and encoded to AAC. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for AAC.
Is this MKV to AAC converter free and safe?
Yes. It's free with no watermark or sign-up. Files are processed locally in your browser, so your audio is never uploaded or stored on our servers.
Can I convert many MKV files to AAC at once?
Yes - add up to 5 files at a time on the free plan (unlimited with Pro), convert them all with one click and download them as a ZIP.
What is the difference between MKV and AAC?
MKV (Matroska Video) is a video format, an open container that can hold many audio, video and subtitle tracks. AAC (Advanced Audio Coding (ADTS)) is a compressed (lossy) format: raw AAC audio stream. The successor to MP3 used by YouTube, iPhone and digital radio.
Does it work on Mac, Windows, iPhone and Android?
Yes. The MKV to AAC converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.