Convert MKV to AC3
Pull the soundtrack out of any MKV video and save it as AC3 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 AC3
- Click "Choose files" or drag your MKV videos onto the page.
- Make sure "AC3" is selected as the output format (384 kbps is a good default).
- Optionally click Edit to trim, adjust volume or add effects.
- Click Convert, then Download your AC3 files.
Why convert MKV to AC3?
AC3 files are much smaller than video and play on any music player, phone or car stereo.
AC3 is best for DVD authoring, home theatre and video production. DVD/Blu-ray players, AV receivers, smart TVs, VLC.
Will I lose quality?
The audio is decoded from the MKV video and encoded to AC3. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for AC3.
MKV vs AC3
| MKV | AC3 | |
|---|---|---|
| Full name | Matroska Video | Dolby Digital (AC-3) |
| Type | video | lossy |
| Best for | films, TV recordings and archives | DVD authoring, home theatre and video production |
| Typical size | varies | ~2.9 MB at 384 kbps per minute |
| Compatibility | VLC, Plex, Kodi, most modern players. | DVD/Blu-ray players, AV receivers, smart TVs, VLC. |
| Developed by | - | Dolby Laboratories (1991) |
MKV to AC3: questions
How do I convert MKV to AC3?
Open this page, add your MKV file, make sure AC3 is selected as the output format and click Convert. Your AC3 file is ready to download in seconds.
Will converting MKV to AC3 lose quality?
The audio is decoded from the MKV video and encoded to AC3. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for AC3.
Is this MKV to AC3 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 AC3 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 AC3?
MKV (Matroska Video) is a video format, an open container that can hold many audio, video and subtitle tracks. AC3 (Dolby Digital (AC-3)) is a compressed (lossy) format: dolby Digital surround-sound audio used on DVDs, Blu-rays and TV broadcasts.
Does it work on Mac, Windows, iPhone and Android?
Yes. The MKV to AC3 converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.