Bulk AMR to WMA Converter Online — Free HD Quality
Drag and drop your multiple AMR files into this free online AMR to WMA converter (.amr to .wma), and click the Convert button to bulk convert them to WMA format in HD quality. Use the quality slider to fine-tune your WMA 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.
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PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
AMR vs WMA — File Format Comparison
| Feature | AMR | WMA |
|---|---|---|
| File Extension | .amr | .wma |
| MIME Type | audio/amr | audio/x-ms-wma |
| 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.
- Compression: Lossy
- Tags & Metadata: Not supported
What Is WMA Format?
Windows Media Audio — Microsoft's proprietary lossy audio codec bundled with Windows Media Player, commonly found in legacy Windows media libraries and early-2000s digital music stores.
- Compression: Lossy
- Tags & Metadata: Supported
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