AAC to OPUS Converter
Convert AAC audio to OPUS 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 AAC to OPUS
Add your AAC files
Click “Choose Files” or drag and drop your AAC audios onto this page.
OPUS is selected
The output is already set to OPUS. Open Advanced settings if you want to change the bitrate or trim the audio.
Convert and download
Click Convert. Your OPUS file is ready in moments — nothing is uploaded.
About the formats
Advanced Audio Coding
AAC is the audio codec used by YouTube, iPhone and most streaming services. It gives great quality at small file sizes.
Opus Audio
Opus is a modern open audio codec with excellent quality at low bitrates. WhatsApp, Discord and WebRTC use it for voice.
Frequently asked questions
How do I convert AAC to OPUS?
Click “Choose Files” and select your AAC file (or drag it onto the page). OPUS is already selected as the output, so just click Convert and download your OPUS 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 AAC 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 AAC to OPUS 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 AAC files at once?
Yes. Add as many AAC files as you like and convert them in one go, then download them one by one or together as a ZIP file.