OPUS to M4A Converter
Convert OPUS audio to M4A for free. Choose the bitrate, sample rate and channels, or trim your audio.
or drop files here
Up to 1 GB per file · Files never leave your device
- 100% free
- No sign-up
- No upload — private
- No watermark
How to convert OPUS to M4A
Add your OPUS files
Click “Choose Files” or drag and drop your OPUS audios onto this page.
M4A is selected
The output is already set to M4A. Open Advanced settings if you want to change the bitrate or trim the audio.
Convert and download
Click Convert. Your M4A file is ready in moments — nothing is uploaded.
About the formats
Opus Audio
Opus is a modern open audio codec with excellent quality at low bitrates. WhatsApp, Discord and WebRTC use it for voice.
MPEG-4 Audio
M4A is AAC audio in an MP4 container. It sounds better than MP3 at the same size and is the default on Apple devices.
Frequently asked questions
How do I convert OPUS to M4A?
Click “Choose Files” and select your OPUS file (or drag it onto the page). M4A is already selected as the output, so just click Convert and download your M4A file when it’s ready.
Which bitrate should I choose?
“Automatic” gives great quality for most music. Use 256–320 kbps for the best sound, or 96–128 kbps for voice recordings and podcasts.
Is it safe to convert OPUS files here?
Yes. Conversion runs inside your own web browser, so your files are never uploaded to our servers or anyone else’s. Nobody can see them, and nothing is stored after you close the tab.
Is the OPUS to M4A converter free?
Yes, it’s completely free. There’s no sign-up, no watermark and no limit on how many files you convert. Each file can be up to 1 GB.
Can I convert several OPUS files at once?
Yes. Add as many OPUS files as you like and convert them in one go, then download them one by one or together as a ZIP file.