Bulk AMR to OPUS Converter Online — Free HD Quality
Drag and drop your multiple AMR files into this 100% free online AMR to OPUS converter (.amr 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 AMR files are removed from our servers right after. Also see:Turn PCM into WAV.
Drop your AMR files here to convert to OPUS, or click to browse
Converts .amr to OPUS (.opus) in HD quality — bulk, free, no signup
Choose FilesAMR vs OPUS — File Format Comparison
See how AMR and OPUS compare across file extension, MIME type, compression, and feature support. Related:Free AMR to ALAC converter.
| Feature | AMR | OPUS |
|---|---|---|
| File Extension | .amr | .opus |
| MIME Type | audio/amr | audio/opus |
| Compression Type | Lossy | Lossy |
| Metadata Support | No | Yes |
What Is AMR Format?
Adaptive Multi-Rate — the standard voice codec for GSM and UMTS mobile networks, used in phone call recordings and voice messages; delivers compact files optimised for speech at 8 kHz. See also:WMA to CAF conversion tool online.
- Compression: Lossy
- Tags & Metadata: Not 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