Convert Opus to M4A
Turn Opus audio files (.opus) into MPEG-4 audio (.m4a) in seconds. Drop one file or a whole batch: the conversion happens right in your browser, with no sign-up, no watermark and no upload.
M4A to Opus insteadHow to convert Opus to M4A
- 1Drop your Opus files into the box above, or click to choose them.
- 2M4A is already selected. Adjust the options if you like.
- 3Click Convert and download your M4A files.
Good to know
- M4A is compressed, so you can pick a bitrate: higher sounds better, lower makes smaller files.
- Large videos are processed as a stream, so even long files work as long as your device has enough memory.
Frequently asked questions
Is converting Opus to M4A free?
Yes. There is no sign-up, no watermark and no limit on the number of files.
Are my files uploaded?
No. Everything runs in your browser, so your files are never uploaded to a server. That also makes it fast, because nothing has to travel over the network.
Will I lose quality converting Opus to M4A?
No noticeable loss: the conversion keeps the content of your Opus file intact.
Can I convert several files at once?
Yes. Drop as many Opus files as you like. They are converted one after another and you can download them individually or as a ZIP.
Is there a file size limit?
There is no fixed limit. Very large files depend on your device's memory, since the conversion runs locally.
What is Opus?
Opus is a modern, efficient audio codec that sounds great even at low bitrates.
What is M4A?
M4A is AAC audio in an MPEG-4 container, the standard on Apple devices and good quality at small sizes.