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Convert AAC to OPUS

Turn AAC files into OPUS in seconds — free, secure, and no signup required.

Free tier: 5 conversions/day, files up to 50 MB, ad-supported. Need more? See Pro plans →
  • 256-bit SSL encryptionYour files are protected end-to-end
  • Lightning-fast conversionsProcess files in seconds, not minutes
  • All major audio formatsMP3, WAV, AAC, FLAC & more
  • No registration requiredStart instantly — 5 free conversions a day
  • Files auto-deleted in 1 hourGDPR-friendly: we never keep your files
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Max file size 50 MB. Sign up for more

Select several files to convert them in one go.

Re-encoding AAC audio as Opus moves files onto the codec that Discord, WhatsApp, and WebRTC rely on for efficient voice and streaming. For spoken content the size savings are substantial; for music it's mainly about platform requirements.

Convert AAC to OPUS – Free Online AAC to OPUS Converter

Why convert AAC to OPUS?

  • Cut spoken-word file sizes roughly in half — Opus at 48 kbps holds up where AAC needs 96 kbps or more for speech.
  • Prepare audio for VoIP platforms, Discord bots, and browser-based calling that operate on Opus internally.
  • Adopt a fully open, royalty-free codec for projects where AAC's patent licensing is a problem.

Tip: Keep the AAC originals for music — a second lossy pass costs a little quality, so Opus copies are best treated as distribution files, not replacements.

How to convert AAC to OPUS

  1. Upload your AAC file using the area above.
  2. OPUS is preselected as the target format.
  3. Click Start and wait for the conversion to finish.
  4. Download your converted OPUS file.
Convert to OPUS
MP3 to OPUSWAV to OPUSFLAC to OPUSOGG to OPUSM4A to OPUSWMA to OPUS
Convert from OPUS
OPUS to MP3OPUS to WAVOPUS to FLACOPUS to OGGOPUS to M4AOPUS to WMA
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AAC to OPUS — Frequently Asked Questions