MP3 to Opus on Windows
Convert MP3 to Opus on your Windows. No app to download. Open your browser, drop your file, and convert. Done in seconds.
Drop your MP3 file here or click to browse
MP3 (.mp3) · Max 20 MB
Runs in Edge, Chrome, and Firefox on Windows 10 and 11. No EXE downloads required. AudioUtils uses WebAssembly to run the conversion engine locally. Your audio stays on your device.
Edge on Windows is fast for audio conversion. Chrome works just as well. Pick whichever you prefer.
Both MP3 and Opus are lossy formats. Each re-encode can degrade quality slightly. Convert once and keep the result. The output is identical regardless of which device or browser you use.
Frequently Asked Questions
Is Opus better than MP3?
Technically, yes. Opus delivers superior quality at lower bitrates, has lower latency, and handles both speech and music well. The trade-off is that MP3 has broader device support.
Where can I play Opus files?
All modern browsers (Chrome, Firefox, Edge, Safari), Discord, Telegram, WhatsApp, VLC, and most modern media players support Opus. Older car stereos and some portable players may not.
What bitrate should I use for Opus?
For music, 96-128kbps Opus rivals 256-320kbps MP3. For voice/speech, 32-64kbps is excellent. Opus is remarkably efficient at low bitrates.
About MP3
The most widely used audio format. Great compatibility, small file size. Ideal for music, podcasts, and general use.
About Opus
Modern open-source codec. Best quality-per-bit of any lossy format. Used by Discord, WebRTC, and modern browsers.