Bulk FLAC to OPUS Converter Online — Free HD Quality
Drag and drop your multiple FLAC files into this free online FLAC to OPUS converter (.flac 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 — your original FLAC files are removed from our servers right after.
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PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
FLAC vs OPUS — File Format Comparison
| Feature | FLAC | OPUS |
|---|---|---|
| File Extension | .flac | .opus |
| MIME Type | audio/flac | audio/opus |
| Compression Type | Lossless | Lossy |
| Metadata Support | Yes | Yes |
What Is FLAC Format?
Free Lossless Audio Codec — open-source lossless compression that reduces file size by 40–60% versus WAV with zero quality loss, perfect for audiophile archiving.
- Compression: Lossless
- 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
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