Bulk AMR to RAS Converter Online — Free HD Quality
Drag and drop your multiple AMR files into this free online AMR to RAS converter (.amr to .ras), and click the Convert button to bulk convert them to RAS format in HD quality. Use the quality slider to fine-tune your RAS output, then download your converted files one by one or as a single ZIP — your original AMR files are removed from our servers right after.
To:
85%
Drop images here or click to browse
PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
AMR vs RAS — File Format Comparison
| Feature | AMR | RAS |
|---|---|---|
| File Extension | .amr | .ras |
| MIME Type | audio/amr | image/x-sun-raster |
| 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 RAS Format?
Sun Raster format for Unix systems.
- Compression: Lossless
- Tags & Metadata: Supported
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