Convert Audio Interchange File Format (.aiff) to iPhone Audio (.iphone-audio) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .aiff file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .m4a file when it's ready.
AIFF files play on iPhone, but at 10 MB per minute they drain both storage and battery faster than compressed alternatives. The iPhone Audio preset encodes AIFF to AAC-LC at 256 kbps — Apple's gold standard for music distribution — in an M4A container optimized for the iPhone's hardware audio decoder. The result sounds identical to AIFF on iPhone's DAC while consuming 80% less space.
iPhone storage is shared between photos, apps, messages, and system data. A modest AIFF library of 200 songs consumes roughly 8 GB, while the same library in AAC at 256 kbps takes about 1.6 GB. Beyond storage, iPhone's hardware AAC decoder is more power-efficient than its PCM playback path for large files, meaning better battery life during music listening.
FFmpeg encodes AIFF PCM to AAC-LC at 44.1 kHz stereo, 256 kbps, in an M4A container with faststart atom placement. The encoder produces AAC-LC profile Level 2, which matches iPhone's hardware decoder specifications exactly. Metadata and artwork from AIFF transfer to M4A atoms. Gapless playback information (iTunSMPB) is written for seamless album playback.
Encoding uncompressed AIFF to AAC at 256 kbps produces transparent quality. Apple considers this their premium tier. In controlled listening tests with iPhone hardware, no subjects could distinguish AAC 256 kbps from the AIFF source.
| Device | AIFF | iPhone Audio |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
AIFF to iPhone Audio delivers Apple's best compressed audio quality from your uncompressed masters. The storage savings are dramatic, and the quality difference is imperceptible on any iPhone model.
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| No |
| Egenskap | AIFF | iPhone Audio |
|---|---|---|
| Fullt navn | Audio Interchange File Format | iPhone Compatible Audio |
| Filendelse | .aiff | .m4a |
| Best egnet for | Lossless quality | iPhone optimized |