Convert OPUS to AIFF

Tested on Windows 11, 24 October 2026

Convert OPUS audio to AIFF in your browser or in the Filoshi app for Windows. AIFF stores the decoded audio without further loss. Nothing is uploaded.

Get Filoshi · $29Many files at once, no size limit, on Windows.

How to convert OPUS to AIFF in your browser

  1. 1
    Drop your OPUS file
    Drag it onto Filoshi above, or press Choose your OPUS file to pick it on your computer.
  2. 2
    Filoshi converts it
    AIFF is chosen already. FFmpeg, compiled to WebAssembly, converts it inside this browser tab.
  3. 3
    Save your AIFF file
    Download it when it is ready. Nothing was sent to a server.
Source format

What is OPUS?

Opus Audio (.opus). Opus is an open, royalty-free codec standardised by the IETF in 2012. It sounds very good at low bitrates for both speech and music, and it is the codec of WebRTC video calls and many voice-message apps.

Common use: Voice messages, calls, streaming, podcasts

Output format

What is AIFF?

Audio Interchange File Format (.aiff). AIFF is Apple's uncompressed audio format, the Mac counterpart of WAV. It keeps every sample, so it is used in music production on macOS, and files are as large as WAV.

Common use: Music production on macOS, Logic Pro and GarageBand

Questions about OPUS to AIFF

Is converting OPUS to AIFF free?
Yes, one file at a time: the converter on this page runs in your browser, files up to 100 MB, no sign-up. The Filoshi desktop app ($29 once, for Windows) converts many files at once and has no size limit.
Does converting OPUS to AIFF lose quality?
No further loss: AIFF keeps exactly what is decoded from the OPUS file. It cannot bring back detail that OPUS's lossy compression already removed, and the AIFF file is usually larger.
Is my OPUS file uploaded anywhere?
No. The converter on this page runs in your browser with FFmpeg compiled to WebAssembly; your OPUS file is read and converted on your device and never sent to a server. The desktop app works the same way, offline.
Has OPUS to AIFF been tested?
Yes. OPUS to AIFF is one of the 1,841 conversions that passed Filoshi's automated test matrix on Windows 11.
Can I convert many OPUS files at once?
Yes, in the desktop app. Drop as many OPUS files as you like on the window, pick AIFF once for all of them, and each file shows its own progress. The new files appear next to the originals, which are never changed.

Related conversions

Other OPUS conversions

OPUS to MP3OPUS to AACOPUS to OGGOPUS to FLACOPUS to M4AOPUS to AC3OPUS to AUOPUS to CAF

Convert to AIFF

MP3 to AIFFWAV to AIFFAAC to AIFFOGG to AIFFFLAC to AIFFM4A to AIFFWMA to AIFFALAC to AIFF

Need OPUS to AIFF for many files?

The browser converter handles one file at a time. The Filoshi app for Windows converts as many as you drop, runs offline, and has 1,841 tested conversions.

Get Filoshi · $29