MKA to OPUS converter
Convert MKA to OPUS in seconds, free and unlimited. No upload, no sign-up, no watermark: your audio never leaves your device.
Last updated
Quick answer: To convert MKA to OPUS, add the MKA file to the iHateFiles MKA to OPUS converter and press Convert. The conversion runs in your browser, so the file is never uploaded, and it is free with no sign-up, watermark or size limit. MKA is a format most software has stopped opening. OPUS is not.
Should you convert MKA to OPUS?
Yes. Very little current software opens MKA, so converting it is the way to keep listening to it. Pick a generous bitrate.
What is inside the MKA decides the loss
An MKA can hold anything Matroska holds, often FLAC, AAC or AC3. If it holds a lossless one, converting to OPUS is the first round of compression. If it holds a lossy one, this is a second generation, so be generous with the bitrate.
Where the OPUS will play
OPUS plays on browsers, Android, WhatsApp and Discord, but not many car stereos or older players.
MKA and OPUS side by side
| MKA | OPUS | |
|---|---|---|
| Inside the file | anything Matroska holds, often FLAC, AAC or AC3 | Opus |
| Compression | Depends on the codec inside | Lossy |
| Carries sound | Yes | Yes |
| One minute of stereo | anything from 1 to 10 MB | 0.25 to 1 MB |
| Plays on | Needs converting first | browsers, Android, WhatsApp and Discord, but not many car stereos or older players |
| Here | Read only | Read and write |
What usually goes wrong
About the MKA. An MKA can hold anything, so what you get from converting depends on the codec that was inside it.
About the OPUS. Opus at 64 kbps sounds better than MP3 at 128, so the bitrate you are used to is roughly double what you need here.
How to convert MKA to OPUS
- Add your MKA file. It is read from your disk and stays there.
- Check the settings. The output format is already set to OPUS.
- Press convert and the OPUS file is saved back to your device.
Questions
How do I convert MKA to OPUS?
Open this page, add your MKA file, and press convert. The file is decoded and re-encoded by your own browser and saved back to your device. Nothing is uploaded.
Is this MKA to OPUS converter free?
Yes, completely. There is no account, no sign-in, no watermark and no daily limit, because there is no server doing the work. Your own device does it.
Are my files uploaded anywhere?
No. There is no upload endpoint. The conversion runs inside this browser tab, so your file never leaves your device. You can open your browser's network panel and watch: nothing carrying your file is sent.
Is there a file size limit?
No fixed limit. Because the work happens on your machine there is no server quota. The only ceiling is your own device's memory, which for video means very large files may be slow.
Will converting to OPUS lose quality?
OPUS is a lossy format, so some detail is discarded. The quality control on this page decides how much. The default is set high enough that most people cannot see the difference.
Can I convert several MKA files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.