How to convert OPUS to M4A
To convert OPUS to M4A, upload your OPUS file, choose M4A as the output format and press Convert. The finished M4A file is ready to save to your phone or computer in seconds, free, with no watermark and no sign-up. Your file is deleted from our server about 30 minutes after the conversion.
This free online converter turns OPUS audio files into M4A in your browser, with no software to install and no watermark. The conversion runs on our server using ffmpeg, and the result is ready to save to your phone or computer in seconds. Your OPUS file is deleted automatically about 30 minutes after the conversion.
What you get with OPUS to M4A
- Better quality than MP3 at the same size
- Full tag and cover art support
- Native on Apple devices
- Opens in: iPhone, iPad, Mac, Android, Windows, VLC and most modern players
What to expect from this conversion
- Both formats are lossy, so converting costs a little extra quality. If you still have the original, convert from that.
- Tags such as title and artist are carried over where M4A supports them.
OPUS vs M4A
| Property | OPUS | M4A |
|---|---|---|
| Full name | Opus Interactive Audio Codec | MPEG-4 Audio |
| Released | 2012, IETF (Xiph.Org, Mozilla, Skype) | 2001, Apple and MPEG |
| Family | Audio | Audio |
| Compression | Lossy | Lossy |
| Opens in | Chrome, Firefox, Android, Discord, VLC; partial on Safari and iOS | iPhone, iPad, Mac, Android, Windows, VLC and most modern players |
| Best for | voice messages and calls; streaming at low data rates | iTunes and Apple Music libraries; audiobooks and podcasts |
Steps to convert OPUS to M4A
- Drop your OPUS file onto the converter, or click to choose it.
- Check that M4A is selected as the target format and adjust the options if you want.
- Press Convert, then save the new M4A file to your device when it finishes.
Tips for the best result
- Choose High for music you care about and Small for voice recordings.
- Convert from the original lossless file when you have one.
Frequently asked questions
How do I convert OPUS to M4A?
Drop your OPUS file on the converter, confirm that M4A is the target format and press Convert. When it finishes, press Save to device or download the M4A file. No account or software is needed.
Is the OPUS to M4A converter free?
Yes. It is free, with no watermark, no sign-up and no limit on how many files you convert. The site is supported by ads.
What should I know before converting OPUS to M4A?
Both formats are lossy, so converting costs a little extra quality. If you still have the original, convert from that. Tags such as title and artist are carried over where M4A supports them.
Will the sound quality change when converting OPUS to M4A?
Both formats are lossy, so converting costs a little extra quality. If you still have the original, convert from that.
Which programs open M4A files?
M4A files open in iPhone, iPad, Mac, Android, Windows, VLC and most modern players.
How large a file can I convert?
Up to 200 MB per file. Files are deleted from the server about 30 minutes after conversion, and no one looks at them.