Bulk M4A to iPhone Audio Converter Online — Free HD Quality
Drag and drop your multiple M4A files into this free online M4A to iPhone Audio converter (.m4a to .iphone), and click the Convert button to bulk convert them to iPhone Audio format in HD quality. Use the quality slider to fine-tune your iPhone Audio 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.
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PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
M4A vs iPhone Audio — File Format Comparison
| Feature | M4A | iPhone Audio |
|---|---|---|
| File Extension | .m4a | .iphone |
| MIME Type | audio/mp4 | audio/mp4 |
| Compression Type | Lossy | Lossy |
| Metadata Support | Yes | Yes |
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 iPhone Audio Format?
iPhone-optimised Audio — AAC/M4A audio encoded at 256 kbps, 44100 Hz stereo for maximum compatibility with iPhone, producing a .m4a file ready to sync via iTunes or AirDrop.
- Compression: Lossy
- Tags & Metadata: Supported
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