Bulk AMR to CAF Converter Online — Free HD Quality
Drag and drop your multiple AMR files into this 100% free online AMR to CAF converter (.amr to .caf), and click the Convert button to bulk convert them to CAF format in HD quality. Use the quality slider to fine-tune your CAF 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:How to convert M4P to WAV?.
Drop your AMR files here to convert to CAF, or click to browse
Converts .amr to CAF (.caf) in HD quality — bulk, free, no signup
Choose FilesAMR vs CAF — File Format Comparison
See how AMR and CAF compare across file extension, MIME type, compression, and feature support. Related:Convert multiple AMR to AIFC at once.
| Feature | AMR | CAF |
|---|---|---|
| File Extension | .amr | .caf |
| MIME Type | audio/amr | audio/x-caf |
| Compression Type | Lossy | Lossless |
| 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.
- Compression: Lossy
- Tags & Metadata: Not supported
What Is CAF Format?
Core Audio Format — Apple's flexible container for macOS and iOS supporting any codec (AAC, ALAC, PCM, MP3) with no file-size limit, used internally by Xcode, Logic Pro, and macOS system sounds.
- Compression: Lossless
- Tags & Metadata: Supported