Opus → MP3

Private, in-browser conversion

No uploads. Drop your .opus files and get .mp3 back — fast and secure.

Drag & drop OPUS files here
or
Tip: On desktop, press Ctrl/Cmd + V to paste audio.
All conversions happen locally in your browser.

How it works

  1. Select or drop your .opus files.
  2. Set bitrate/channels as you like.
  3. Click Start Convert. Files are processed in your browser.

Mobile-ready: iOS/Safari supported (single-thread core).

FAQ

Does it upload my audio?
No. Conversion happens locally in your browser with WebAssembly FFmpeg.
Which files are supported?
Primary: .opus (Ogg Opus). Also accepts audio/* for convenience.
Why do I see “conversion failed” sometimes?
Usually due to malformed files or low memory. You can retry or convert files one by one.