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GroovyConvert

Opus to AAC Converter

Convert Opus to AAC online in seconds, for free and with no watermark. Nothing is uploaded: the conversion runs in your browser.

Drop Files Here

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0 bytessent to any server

Your files stay yours

Files are converted inside your browser. They are never sent to a server and we don’t keep any copy. Everything is wiped from memory when you clear the list or close the tab.

How It Works

  1. 1

    Drop your Opus files, choose them or paste them.

  2. 2

    They are converted to AAC automatically, right on your device.

  3. 3

    Download them one by one or all together in a ZIP.

What is Opus?

Opus is the most efficient audio codec there is, used by WhatsApp, Telegram, Discord and video calls. It sounds good even at very low bitrates.

What is AAC?

AAC is the successor to MP3 and the audio codec in most videos. A bare .aac file has no container and some players don’t open it; M4A is the same audio, better packaged.

More Opus Conversions

Convert Other Formats to AAC

Questions

Does converting Opus to AAC lose quality?
When the audio and video already fit in AAC, they are copied as is, without any loss and almost instantly. Otherwise they are re-encoded at the quality you choose (high by default), and the difference is hard to notice.
Do you store my files?
No. Your files are never uploaded, so there is nothing for us to store. They only exist in your browser’s memory while the page is open and are deleted when you remove them, clear the list or close the tab. We only count anonymous usage, like how many conversions happen, never file names or contents.
Is it safe?
Yes. Your files are converted on your own device and are never uploaded to any server.
Is it free?
Yes. It’s free, with no sign-up, no watermarks and no ads.
Is there a limit?
We don’t set any limit on the number or size of files. Since everything happens on your device, its memory is the real limit: on a computer, 100-megapixel photos, 300-page PDFs and long videos convert without trouble. Phones have less room. Video and audio use your browser’s codecs, so Chrome and Edge support the most formats. If something doesn’t work, we’ll tell you.
Does it work on my phone?
Yes, in any modern browser on iPhone, Android or desktop.