Skip to content

Bulk M4A to AMR Converter Online — Free HD Quality

Drag and drop your multiple M4A files into this free online M4A to AMR converter (.m4a 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 — your original M4A files are removed from our servers right after.

To:
85%

Drop images here or click to browse

PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more

Max 100MB per file

M4A vs AMR — File Format Comparison

Feature M4A AMR
File Extension .m4a .amr
MIME Type audio/mp4 audio/amr
Compression Type Lossy Lossy
Metadata Support Yes No

What Is M4A Format?

MPEG-4 Audio — AAC audio in an MP4 container, the standard format for Apple Music, iTunes purchases, and iPhone voice memos, offering better quality than MP3 at equivalent bitrates.

  • 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

Related Converters