ALAC to AIFF Audio Converter
Drop your ALAC files — the AIFF audio is generated in your browser in seconds. Multiple files at once, no upload on the fast path.
9,214+ audio files converted
AIFF is a popular target for a reason: it is best for Editing & mastering on Mac. This converter encodes straight to AIFF in your browser, so even large libraries convert quickly and privately — nothing is sent to a server on the fast path.
Looking to programmatically convert ALAC to AIFF?
Same engine, available as a JSON API. Drop a file or URL via REST and get the converted audio back — no browser, no UI, no rate limits on paid tiers.
Fast response on common audio pairs
Webhook delivery for batch jobs
Dozens of audio format pairs supported
ALAC vs AIFF: how they compare
The numbers and capabilities at a glance, so you know what you're trading.
ALAC (Apple Lossless)
- Year released
- 2004
- Compression
- Lossless
- Lossless
- Yes
- Channels
- Multichannel
- Player support
- Apple ecosystem
- Best for
- Lossless libraries in Apple Music
AIFF
- Year released
- 1988
- Compression
- Uncompressed (PCM)
- Lossless
- Yes
- Channels
- Multichannel
- Player support
- Apple ecosystem
- Best for
- Editing & mastering on Mac
Real ALAC → AIFF file sizes
We ran a fixed set of audio samples through this exact converter so you can see the typical size impact before converting your own files.
| Audio sample | ALAC size | AIFF size | Change |
|---|---|---|---|
| Music (broadband) | 410.1 KB | 1.01 MB | +152% larger |
| Speech (narrowband) | 282.6 KB | 516.8 KB | +83% larger |
Measured on synthetic 6s · 44.1 kHz audio samples with this converter on 2026-06-23. Real-world files vary with duration, bitrate and content.
Best practices for AIFF
Small choices that keep your output sounding right.
- Play the first converted file before batch-converting the rest, so you catch a wrong setting early.
- AIFF is lossless — ideal for editing or archiving. Expect files several times larger than an MP3 or AAC equivalent.
- Check that title, artist, album and cover art survived the conversion; some players cache old tags.
The importance of a good audio conversion
Why getting ALAC → AIFF right matters more than you think.
Frequently asked
The basics everyone asks before dropping a track.
Convert ALAC to other formats
Convert other formats to AIFF