Bulk OPUS to AMR Converter Online — Free HD Quality
Drag and drop your multiple OPUS files into this free online OPUS to AMR converter (.opus to .amr), and click the Convert button to bulk convert them to AMR format in HD quality. Use the quality slider to fine-tune your AMR output, then download your converted files one by one or as a single ZIP — your original OPUS 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
OPUS vs AMR — File Format Comparison
| Feature | OPUS | AMR |
|---|---|---|
| File Extension | .opus | .amr |
| MIME Type | audio/opus | audio/amr |
| Compression Type | Lossy | Lossy |
| Metadata Support | Yes | No |
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
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.
- Compression: Lossy
- Tags & Metadata: Not supported
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