Bulk WMA to AMR Converter Online — Free HD Quality
Drag and drop your multiple WMA files into this 100% free online WMA to AMR converter (.wma 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 — no signup and no downloads needed, and your original WMA files are removed from our servers right after. Also see:Handle many WAV to M4A at once.
Drop your WMA files here to convert to AMR, or click to browse
Converts .wma to AMR (.amr) in HD quality — bulk, free, no signup
Choose FilesWMA vs AMR — File Format Comparison
See how WMA and AMR compare across file extension, MIME type, compression, and feature support. Related:How to batch convert WMA to M4R?.
| Feature | WMA | AMR |
|---|---|---|
| File Extension | .wma | .amr |
| MIME Type | audio/x-ms-wma | audio/amr |
| Compression Type | Lossy | Lossy |
| Metadata Support | Yes | No |
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. See also:Mass WMA to ALAC conversion.
- 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