Bulk PCM to AMR Converter Online — Free HD Quality
Drag and drop your multiple PCM files into this 100% free online PCM to AMR converter (.pcm 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 PCM files are removed from our servers right after. Also see:AAC to FLAC converter - no registration.
Drop your PCM files here to convert to AMR, or click to browse
Converts .pcm to AMR (.amr) in HD quality — bulk, free, no signup
Choose FilesPCM vs AMR — File Format Comparison
See how PCM and AMR compare across file extension, MIME type, compression, and feature support. Related:Save PCM as OGG.
| Feature | PCM | AMR |
|---|---|---|
| File Extension | .pcm | .amr |
| MIME Type | audio/x-raw | audio/amr |
| Compression Type | Lossless | Lossy |
| Metadata Support | No | No |
What Is PCM Format?
Raw PCM Audio — headerless binary audio data containing uncompressed pulse-code modulation samples with no metadata; typically 44100 Hz stereo 16-bit little-endian, used in low-level audio pipelines and embedded systems. See also:Bulk PCM to M4A tool.
- Compression: Lossless
- 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