Bulk AAC to AMR Converter Online — Free HD Quality
Drag and drop your multiple AAC files into this 100% free online AAC to AMR converter (.aac 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 AAC files are removed from our servers right after. Also see:Online MP3 to M4R converter tool.
Drop your AAC files here to convert to AMR, or click to browse
Converts .aac to AMR (.amr) in HD quality — bulk, free, no signup
Choose FilesAAC vs AMR — File Format Comparison
See how AAC and AMR compare across file extension, MIME type, compression, and feature support. Related:Easy AAC to AIFF converter.
| Feature | AAC | AMR |
|---|---|---|
| File Extension | .aac | .amr |
| MIME Type | audio/aac | audio/amr |
| Compression Type | Lossy | Lossy |
| Metadata Support | Yes | No |
What Is AAC Format?
Advanced Audio Coding — the successor to MP3 adopted by Apple, YouTube, and mobile platforms; delivers better quality than MP3 at the same bitrate, especially below 128 kbps. See also:Change WAVE files to WAV.
- 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