Why convert Opus to MP3?
Opus is the best low-bitrate codec, used by Discord, WhatsApp and Zoom. Converting it to MP3 gets you the universal small-file format every device, app and car stereo plays, so it plays and shares everywhere without hassle. It's especially useful because Opus files often refuse to open in mainstream players and editors.
This converter runs the same FFmpeg engine desktop tools use, compiled to WebAssembly and executed entirely in your browser. Your Opusnever touches a server — which is why it's private, works on slow connections, and has no queue. You can also trim, fade, merge and batch-convert in the same step.
Frequently Asked Questions
How do I convert Opus to MP3 for free?
Drop your Opus file into the tool above (or click to browse), then hit Export. The output is already set to MP3. It converts instantly in your browser and downloads — no signup, no watermark.
Is my Opus file uploaded to a server?
No. The conversion runs entirely in your browser using WebAssembly (FFmpeg). Your Opus file never leaves your device, which is why it works offline and stays private.
Will converting Opus to MP3 lose quality?
Both Opus and MP3 are compressed, so re-encoding loses a little quality. Pick a high bitrate (320 kbps) in Advanced options to keep it as clean as possible.
Can I trim or fade the audio while converting Opus to MP3?
Yes — drag the waveform handles to trim, add fade-in/out, adjust volume or bitrate, then export. You can also drop several Opus files to batch-convert or merge them into one MP3 file.