Bulk OPUS to AAC Converter Online — Free HD Quality
Drag and drop your multiple OPUS files into this 100% free online OPUS to AAC converter (.opus to .aac), and click the Convert button to bulk convert them to AAC format in HD quality. Use the quality slider to fine-tune your AAC output, then download your converted files one by one or as a single ZIP — no signup and no downloads needed, and your original OPUS files are removed from our servers right after. Also see:Handle many WAVE to OGG at once.
Drop your OPUS files here to convert to AAC, or click to browse
Converts .opus to AAC (.aac) in HD quality — bulk, free, no signup
Choose FilesOPUS vs AAC — File Format Comparison
See how OPUS and AAC compare across file extension, MIME type, compression, and feature support. Related:Change AAC to FLAC.
| Feature | OPUS | AAC |
|---|---|---|
| File Extension | .opus | .aac |
| MIME Type | audio/opus | audio/aac |
| Compression Type | Lossy | Lossy |
| Metadata Support | Yes | Yes |
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. See also:Free online PCM to M4B tool.
- Compression: Lossy
- Tags & Metadata: Supported
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