Bulk AAC to OPUS Converter Online — Free HD Quality
Drag and drop your multiple AAC files into this 100% free online AAC to OPUS converter (.aac to .opus), and click the Convert button to bulk convert them to OPUS format in HD quality. Use the quality slider to fine-tune your OPUS output, then download your converted files one by one or as a single ZIP — no signup and no downloads needed, and your original AAC files are removed from our servers right after. Also see:Export MIDI as WAV.
Drop your AAC files here to convert to OPUS, or click to browse
Converts .aac to OPUS (.opus) in HD quality — bulk, free, no signup
Choose FilesAAC vs OPUS — File Format Comparison
See how AAC and OPUS compare across file extension, MIME type, compression, and feature support. Related:Change FLAC files to IPHONE.
| Feature | AAC | OPUS |
|---|---|---|
| File Extension | .aac | .opus |
| MIME Type | audio/aac | audio/opus |
| Compression Type | Lossy | Lossy |
| Metadata Support | Yes | Yes |
What Is AAC Format?
Advanced Audio Coding — the successor to MP3 adopted by Apple, YouTube, and mobile platforms; delivers better quality than MP3 at the same bitrate, especially below 128 kbps.
- Compression: Lossy
- Tags & Metadata: Supported
What Is OPUS Format?
Opus — the IETF standard for internet voice and music streaming; outperforms MP3, AAC, and Vorbis at every bitrate, and is the default codec for WebRTC, Discord, and Spotify Connect.
- Compression: Lossy
- Tags & Metadata: Supported