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AIFF to ALAC Converter

Convert AIFF files to ALAC format online for free. No installation or registration required.

Quick Answer: How to Convert AIFF to ALAC

AIFF is Apple's uncompressed audio format, the Mac-side counterpart to WAV. ALAC is Apple Lossless — FLAC's counterpart inside the MP4/M4A container. Converting between them re-encodes the media with ALAC's compression model, so output quality depends on the settings you pick in the converter. Run it free at practicalwebtools.com/convert/audio/aiff-to-alac: drop in your AIFF, adjust settings if you like, and download the ALAC — no signup, no upload, everything stays on your device.

AIFF vs ALAC: Which One and Why

AIFF is Apple's uncompressed audio format, the Mac-side counterpart to WAV, designed by Apple in 1988 from Electronic Arts' IFF standard. ALAC is Apple Lossless — FLAC's counterpart inside the MP4/M4A container, released by Apple in 2004; open-sourced under Apache 2.0 in 2011. People reach for AIFF mainly for professional music production on macOS, DJ software libraries, sample packs, while ALAC is the usual choice for Apple Music lossless streaming, ripping CDs for the Apple ecosystem, iPhone/local-library audiophile setups. AIFF's headline strength: bit-perfect quality. ALAC's: perfect fidelity inside the iTunes/Apple Music pipeline. On the other side of the ledger, AIFF limitation: same huge file sizes as WAV — and ALAC limitation: no advantage over FLAC outside the Apple world.

How to Convert AIFF to ALAC Online

1
Add your AIFF file: Drag and drop it into the converter, or click to browse. AIFF files up to the size limit are accepted, and nothing is uploaded — processing runs locally in your browser.
2
Set ALAC options: Pick your quality: the converter exposes the settings that matter for ALAC. Higher bitrates preserve more of the AIFF's detail at larger file sizes.
3
Download the ALAC: Conversion runs on your device. When it completes, download the ALAC file — repeat for as many files as you need, free and unlimited.

Key Facts

AIFF: designed by Apple in 1988 from Electronic Arts' IFF standard, uncompressed PCM — same size as WAV at equal settings.
ALAC: released by Apple in 2004; open-sourced under Apache 2.0 in 2011, lossless — roughly 40–60% of original size, comparable to FLAC.
AIFF strength: bit-perfect quality.
ALAC strength: perfect fidelity inside the iTunes/Apple Music pipeline.
AIFF limitation to know: same huge file sizes as WAV.
ALAC limitation to know: no advantage over FLAC outside the Apple world.
Fun fact: Apple Music streams ALAC up to 24-bit/192 kHz — but AirPods re-compress it to AAC over Bluetooth, so lossless is only audible on wired or Wi-Fi playback

Format Background

AIFF

AIFF — designed by Apple in 1988 from Electronic Arts' IFF standard. AIFF-C (compressed AIFF, the .aifc extension) can hold IMA/SDX2 codecs — rare today, but why some .aifc files are far smaller than expected

ALAC

ALAC — released by Apple in 2004; open-sourced under Apache 2.0 in 2011. Apple Music streams ALAC up to 24-bit/192 kHz — but AirPods re-compress it to AAC over Bluetooth, so lossless is only audible on wired or Wi-Fi playback

Frequently Asked Questions

Will converting AIFF to ALAC lose quality?

It depends on the formats: AIFF is uncompressed PCM — same size as WAV at equal settings and ALAC is lossless — roughly 40–60% of original size, comparable to FLAC. Any step from a lossless source into ALAC keeps everything; any lossy step re-encodes and discards some data.

Are my files uploaded anywhere during AIFF → ALAC conversion?

No. This converter runs on WebAssembly inside your browser — your AIFF file is read from disk, processed by your device's CPU, and the ALAC is written back locally. There is no server upload at any point, which also means no size-based throttling or waiting in queue.

Does the converter keep metadata (title, artist, cover art)?

Where the ALAC container supports it, standard tags are carried across. Apple Music streams ALAC up to 24-bit/192 kHz — but AirPods re-compress it to AAC over Bluetooth, so lossless is only audible on wired or Wi-Fi playback

What ALAC settings should I choose?

For Apple Music lossless streaming, start with the converter's default preset — it's tuned for the common case. If you need smaller files, step quality down gradually and listen or look at the result before batch-converting everything.

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AIFF to MP3 AIFF to WAV AIFF to OGG AIFF to AAC MP3 to ALAC WAV to ALAC OGG to ALAC AAC to ALAC