Convert AIFF to ALAC

Drag and drop files here or click to select.
Max file size 100mb.

Uploading progress:

AIFF vs ALAC Format Comparison

Aspect	AIFF (Source Format)	ALAC (Target Format)
Format Overview	AIFF Audio Interchange File Format Audio Interchange File Format (AIFF) is an uncompressed audio container developed by Apple in 1988, based on the IFF standard. Like WAV, AIFF stores raw PCM samples for bit-perfect audio quality. It is the traditional recording and editing format on macOS, widely used in Logic Pro, GarageBand, and other Apple professional audio applications. Lossless Standard	ALAC Apple Lossless Audio Codec Apple Lossless Audio Codec (ALAC) is a lossless compression format developed by Apple in 2004 and open-sourced in 2011. ALAC achieves approximately 50% compression compared to uncompressed audio while preserving every bit of the original recording. It is the native lossless format for iTunes, Apple Music, and all Apple devices, stored within M4A/MP4 containers. Lossless Modern
Technical Specifications	Sample Rates: 8 kHz – 192 kHz+ Bit Depth: 8, 16, 24, 32-bit Channels: Mono, Stereo, Multichannel Codec: PCM (uncompressed) / AIFF-C (compressed) Container: IFF/AIFF (.aiff, .aif)	Sample Rates: 1–384 kHz Bit Depth: 16, 20, 24, 32-bit Channels: Mono, Stereo, Surround (up to 7.1) Codec: Apple Lossless (open-source since 2011) Container: M4A / MP4 / CAF (.m4a)
Audio Encoding	AIFF stores raw PCM samples in Apple's IFF-based container, preserving full audio fidelity: # Encode to AIFF (16-bit, 44.1 kHz) ffmpeg -i input.wav -codec:a pcm_s16be \ output.aiff # High-resolution AIFF (24-bit, 96 kHz) ffmpeg -i input.wav -codec:a pcm_s24be \ -ar 96000 output.aiff	ALAC uses linear prediction and entropy coding to achieve lossless compression, storing audio in M4A/MP4 containers: # Encode WAV to ALAC ffmpeg -i input.wav -codec:a alac output.m4a # ALAC with high-resolution settings ffmpeg -i input.wav -codec:a alac \ -sample_fmt s32p output.m4a
Audio Features	Metadata: NAME, AUTH, ANNO chunks; ID3 tags in some implementations Album Art: Limited support via ID3 tags Gapless Playback: Inherent — no encoder padding Streaming: Poor — large file sizes like WAV Surround: Multichannel PCM supported Chapters: Marker chunks for loop/cue points	Metadata: iTunes-style MP4 atoms (title, artist, album, artwork) Album Art: Full embedded artwork support via MP4 container Gapless Playback: Native gapless support in Apple ecosystem Streaming: Supported via AirPlay and Apple Music lossless tier Surround: Up to 7.1 multichannel audio Chapters: Supported via MP4 chapter tracks
Advantages	Bit-perfect uncompressed audio identical to WAV quality Native format on macOS and Apple professional audio tools Loop point and marker metadata for music production Better metadata support than WAV in Apple ecosystem No file size limit concerns (unlike 4GB WAV RIFF limit) Industry standard in Mac-based recording studios	Bit-perfect lossless compression with ~50% size reduction vs WAV Native Apple ecosystem integration (iTunes, Apple Music, AirPlay) Open-source codec since 2011 (Apache License 2.0) Supports high-resolution audio up to 384 kHz / 32-bit Rich metadata and album art via MP4 container Hardware decoding on all Apple devices
Disadvantages	Very large files (same size as WAV for uncompressed PCM) Less common on Windows and Linux than WAV AIFF-C compressed variant rarely used Impractical for streaming or portable devices Limited metadata support compared to FLAC	Limited support outside Apple ecosystem compared to FLAC Larger files than lossy formats (typically 50-60% of WAV) Fewer third-party tools and players vs FLAC Not supported by most web browsers for playback Less efficient compression than FLAC in most cases
Common Uses	Mac-based recording studios and DAWs Logic Pro and GarageBand native format Professional audio editing on macOS Sample libraries and sound design CD mastering on Apple platforms	Apple Music lossless streaming tier iTunes music library archival AirPlay lossless audio streaming Apple ecosystem music collection Lossless CD ripping on macOS
Best For	macOS-based professional audio production Logic Pro and GarageBand projects Uncompressed audio archival on Apple systems Sample libraries with loop points and markers	Apple device users wanting lossless audio quality iTunes and Apple Music lossless library management AirPlay streaming with zero quality loss Archiving music collections within Apple ecosystem
Version History	Introduced: 1988 (Apple Computer) Current Version: AIFF / AIFF-C (compressed variant) Status: Mature, standard on macOS Evolution: AIFF (1988) → AIFF-C (1991) → Core Audio support	Introduced: 2004 (Apple Inc.) Current Version: Open-source reference implementation Status: Active, open-source since 2011 Evolution: Proprietary (2004) → Open-source (2011) → Apple Music Lossless (2021)
Software Support	Media Players: iTunes, VLC, QuickTime, foobar2000 DAWs: Logic Pro, GarageBand, Pro Tools, Ableton Live Mobile: iOS (native), Android (VLC) Web Browsers: Safari (native); Chrome, Firefox (limited) Editors: Audacity, Adobe Audition, WaveLab	Media Players: iTunes, Apple Music, VLC, foobar2000, AIMP DAWs: Logic Pro, GarageBand (native); others via FFmpeg Mobile: iOS (native), Android (VLC, Poweramp) Web Browsers: Safari (partial); Chrome/Firefox via extensions Streaming: Apple Music, AirPlay

Why Convert AIFF to ALAC?

Converting AIFF to ALAC compresses uncompressed Apple audio into Apple's lossless compressed format, reducing file sizes by approximately 50% with absolutely zero quality loss. Both formats preserve bit-perfect audio, but ALAC's compression makes it far more practical for storing large music libraries.

AIFF stores raw PCM samples without any compression, resulting in very large files (~10 MB per minute at CD quality). ALAC applies lossless compression to achieve roughly half the file size while guaranteeing mathematically identical audio output. For a 100 GB AIFF library, this conversion could save approximately 50 GB of storage.

Both AIFF and ALAC are Apple formats, ensuring a smooth transition within the Apple ecosystem. ALAC files use the M4A container, which provides richer metadata support than AIFF — including iTunes-compatible tags, embedded album art, and chapter markers. Your iTunes library will actually gain metadata capabilities through this conversion.

This is a perfect lossless conversion with no quality trade-offs. The ALAC files can be decoded back to AIFF (or WAV) at any time, producing bit-identical output. The only consideration is that some legacy audio applications may not read ALAC files, in which case you would need to convert back to AIFF for those specific workflows.

Key Benefits of Converting AIFF to ALAC:

Reduce file sizes by ~50% with zero quality loss
Bit-perfect lossless conversion — mathematically identical audio
Better metadata support through M4A/MP4 container
Native integration with iTunes and Apple Music
Gapless playback support across the Apple ecosystem
Hardware-accelerated decoding on all Apple devices
Reversible conversion — can always decode back to AIFF

Practical Examples

Example 1: Mac Studio Recording Archive

Scenario: A recording studio converts their vast AIFF session archive to ALAC, saving 50% storage while maintaining lossless quality on macOS.

Source: session_stems/ (AIFF, 2,400 files, 480 GB)
Conversion: AIFF → ALAC (lossless)
Result: 2,400 ALAC files (total ~240 GB)

Storage savings:
1. 50% reduction: 480 GB → ~240 GB
2. Bit-perfect audio preservation guaranteed
3. Rich metadata via M4A container (vs AIFF limits)
4. Native Apple ecosystem integration
5. Reversible — can decode back to AIFF anytime

Example 2: Logic Pro Library Organization

Scenario: A composer converts their AIFF sample library to ALAC for better organization with iTunes-compatible metadata and album artwork.

Source: orchestral_samples/ (AIFF, 800 files, 45 GB)
Conversion: AIFF → ALAC (lossless)
Result: 800 ALAC files (total ~23 GB)

Benefits:
✓ 49% storage savings with zero quality loss
✓ iTunes metadata: categories, tags, artwork
✓ Searchable library in Apple Music app
✓ Native playback across all Apple devices
✓ Professional sample quality fully preserved

Example 3: Podcast Master Archive

Scenario: A podcast network converts their AIFF episode masters to ALAC for efficient long-term archival with comprehensive metadata.

Source: 500 AIFF episodes (total 2.1 TB)
Conversion: AIFF → ALAC (lossless)
Result: 500 ALAC episodes (total ~1.05 TB)

Archive benefits:
✓ 1 TB storage savings across the archive
✓ Full episode metadata in MP4 container
✓ Chapter markers for episode navigation
✓ Lossless quality identical to AIFF originals
✓ Efficient backup and cloud sync

Frequently Asked Questions (FAQ)

Q: Does converting AIFF to ALAC improve audio quality?

A: Since both are lossless, the conversion preserves identical audio quality.

Q: How much larger will the ALAC files be?

A: ALAC files may be slightly larger or smaller depending on compression efficiency differences.

Q: Can I convert ALAC back to AIFF later?

A: Yes, you can convert ALAC to AIFF at any time. The conversion will be lossless in both directions.

Q: Will my AIFF metadata transfer to ALAC?

A: Standard metadata fields (title, artist, album, track number, genre) and embedded album art transfer to ALACs MP4 container atoms. The specific metadata mapping depends on the source format, but most common fields are handled automatically by our converter.

Q: Why convert to ALAC instead of FLAC?

A: Choose ALAC for Apple ecosystem integration — native iTunes/Apple Music support, AirPlay lossless streaming, hardware-accelerated decoding on Apple devices, and seamless iPhone syncing. Choose FLAC for cross-platform compatibility. Both are excellent lossless formats with identical audio quality.

Q: How fast is AIFF to ALAC conversion?

A: The conversion is very fast, typically much faster than real-time. A 5-minute audio file converts in just a few seconds on modern hardware. The main factors are the decoding speed of AIFF and the ALAC encoding speed, both of which are computationally lightweight.

Q: What is ALAC and why is it used?

A: ALAC (Apple Lossless Audio Codec) is Apples lossless audio format, open-source since 2011. It compresses audio to ~50% of WAV size with zero quality loss. ALAC is used by Apple Music for its lossless tier, and is the native lossless format for all Apple devices and software.

Q: Is ALAC better than AIFF?

A: Both are lossless with identical audio quality. ALAC offers better Apple integration while AIFF may have advantages in other ecosystems.