Bulk MP1 to AMR Converter Online — Free HD Quality
Drag and drop your multiple MP1 files into this 100% free online MP1 to AMR converter (.mp1 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 MP1 files are removed from our servers right after. Also see:Free M4R to M4A - no account needed.
Drop your MP1 files here to convert to AMR, or click to browse
Converts .mp1 to AMR (.amr) in HD quality — bulk, free, no signup
Choose FilesMP1 vs AMR — File Format Comparison
See how MP1 and AMR compare across file extension, MIME type, compression, and feature support. Related:How to turn MP1 into WMA?.
| Feature | MP1 | AMR |
|---|---|---|
| File Extension | .mp1 | .amr |
| MIME Type | audio/mpeg | audio/amr |
| Compression Type | Lossy | Lossy |
| Metadata Support | No | No |
What Is MP1 Format?
MPEG-1 Audio Layer 1 — the earliest MPEG audio codec, used in Video CD and some legacy broadcast equipment; superseded by MP2 and MP3 and encountered only in archival digital video content. See also:Handle many MP1 to AIFF at once.
- Compression: Lossy
- Tags & Metadata: Not 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