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Convert MKV to MP3
iPhones, social networks and some TVs do not accept MKV. Converted to MP3, it opens everywhere.
- Free
- No sign-up
- Batch conversion
Why convert MKV to MP3?
To convert MKV files to MP3, drop them on the counter above. You keep just the sound, as a small MP3 that plays on every phone and car stereo.
Most files convert in seconds: no queue, no email address, and the MP3 result saves straight to your computer or phone.
How to convert MKV to MP3
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Add your MKV files
Drag your MKV files onto the counter or pick them with Choose files. You can add several at once.
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Check the settings
The defaults suit most cases. Change quality, size or other options if you like; after a change, one click converts again.
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Conversion starts by itself
Each file is converted to MP3 and its row is stamped CONVERTED.
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Download your MP3 file
Get the file with Download. With several files you can download them all as one ZIP.
MKV vs MP3
| Property | MKV | MP3 |
|---|---|---|
| Full name | Matroska Video | MPEG-1 Audio Layer III |
| Type | Video | Audio |
| Compression | Depends on codec | Lossy |
| Created by | Matroska | Fraunhofer IIS / MPEG |
| Year | 2002 | 1993 |
| Extensions | .mkv | .mp3 |
| MIME | video/x-matroska | audio/mpeg |
About the formats
MKV
Matroska Video
MKV (Matroska) is a flexible video container that can hold several audio tracks, subtitles and chapters in one file. It is common in film collections and OBS recordings.
MP3
MPEG-1 Audio Layer III
MP3 is the most widespread audio format in the world. Lossy compression shrinks files to about a tenth of WAV, and it plays on every device.
Frequently asked questions
Is converting MKV to MP3 free?
Yes, completely free. No account, no daily limit, no watermark and no queue.
Will the sound quality drop?
The soundtrack is re-encoded to MP3. At 192 kbps and above most listeners cannot tell it from the original.
Does it work on a phone?
Yes. It works on iPhone, iPad and Android, with no app to install.
Is there a file size limit?
There is no size limit set by us. Files of hundreds of MB convert too; very large files take longer and are handled more comfortably on a computer than on a phone.
Other conversions
| Family | Give | → | Get | What you gain |
|---|---|---|---|---|
| MKV | MP4 | plays everywhere | ||
| MKV | MOV | Apple and video editors | ||
| MKV | WEBM | light video for the web | ||
| MKV | AVI | works with old players | ||
| MKV | GIF | silent loop | ||
| MKV | WAV | sound only, lossless, ready to edit | ||
| MKV | M4A | sound only, better than MP3 at the same size | ||
| WAV | MP3 | plays on every device · studio recording | ||
| M4A | MP3 | plays on every device · iPhone voice memo | ||
| OGG | MP3 | plays on every device · Telegram voice message | ||
| OPUS | MP3 | plays on every device · WhatsApp voice note | ||
| FLAC | MP3 | plays on every device · lossless archive | ||
| MP4 | MP3 | sound only, plays on every device |