FREE CONVERTER · ON YOUR DEVICE
Convert OPUS to MP3
Add your OPUS file below and press the button: Cocuyo converts it to MP3 right in your browser, for free and with no watermark. MP3 is already selected as the output. You want to keep or edit a WhatsApp voice note: WhatsApp exports them as .opus and many apps cannot open them.
- Free, no watermark
- Your files never leave your device
- MP3 pre-selected
Chrome, Edge, Firefox and Android read OGG and OPUS. On iPhone and Mac it depends on the Safari version: if it will not open, try another browser.
HOW TO DO IT
Three steps.
Add your OPUS file
Drop it on the box or choose it. Up to 10 audio files at once, up to 100 MB and 15 minutes each.
Check that MP3 is selected
MP3 comes pre-selected. Change the quality (128 to 320 kbps) if you need to.
Download the MP3
Press the button and download each file, or all of them in a ZIP when there are several.
FORMATS
OPUS vs MP3: what changes
You want to keep or edit a WhatsApp voice note: WhatsApp exports them as .opus and many apps cannot open them. Export the audio from the chat (Share, or Export chat with media) and convert it here. 128 kbps is enough for speech.
| Feature | OPUS | MP3 |
|---|---|---|
| What it is | Opus audio inside Ogg: how WhatsApp stores voice notes. | Compressed audio. |
| Compression | Lossy and designed for speech: a minute takes very little space. | Lossy: about 1.4 MB per minute at 192 kbps. |
| Transparency, animation or sound | Sound only. | Sound only. |
| Compatibility | WhatsApp, browsers and Android; many players, cars and editors cannot open it. | Universal: phones, cars, speakers and websites. |
| Best for | Voice notes and calls. | Music, podcasts and audio to share. |
OPUS to MP3: common questions
Does converting OPUS to MP3 lose quality?
Export the audio from the chat (Share, or Export chat with media) and convert it here. 128 kbps is enough for speech.
How many files can I convert at once?
Up to 10 audio files at once, up to 100 MB and 15 minutes each.
Does it work in every browser?
Chrome, Edge, Firefox and Android read OGG and OPUS. On iPhone and Mac it depends on the Safari version: if it will not open, try another browser.
Are my files uploaded to a server?
No. The conversion happens inside your browser: the file is read and processed on your device and is not sent to Cocuyo or to any third party. You can check it in your browser’s network tools: your file is not sent.
Is it really free?
Yes. You can try it before signing up; to download the result we ask for a free account, with no subscription. Your free account comes with 30 welcome uses; after that, each use costs 1 credit (top-ups from US$1), and they are unlimited with Basic or Pro. It never adds a watermark.
Learn how to…
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