Convert MP3 to Opus Online
Need to convert MP3 to Opus right now? Drop your file and get results in seconds. Everything runs in your browser. Your audio never leaves your device.
Drop your MP3 file here or click to browse
MP3 (.mp3) · Max 20 MB
AudioUtils converts MP3 to Opus using WebAssembly. The entire process happens locally. No upload, no server, no waiting in a queue.
Open any browser. Pick your file. Click convert. The Opus file downloads instantly. Works on any device with a modern browser.
Both MP3 and Opus are lossy formats. Each re-encode can degrade quality slightly. Convert once and keep the result. Free tier handles input files up to 20MB with a 10-second preview output. Upgrade to Pro for unlimited, full-length conversions up to 500MB.
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.