AIFF to FLAC Converter

When you need AIFF to FLAC

AIFF is Apple's uncompressed audio format, native to the Mac and to studio applications. Tracks are exported from Logic Pro and GarageBand in it, and studio sessions, masters, and vinyl digitizations are stored in it. AIFF quality is impeccable, but you pay for it with space: a minute of stereo audio takes around ten megabytes, and a couple of years of session archives easily grow into hundreds of gigabytes.

FLAC solves exactly this problem. It is a lossless compression format: it packs the same audio data more compactly, and on playback the sound is restored bit for bit. Converting AIFF to FLAC is honest compression with no quality degradation whatsoever.

What changes after conversion

The audio stays identical to the source AIFF: both store the same data, FLAC simply does it more economically. The sample rate and bit depth of the recording are preserved, including studio-grade 24-bit / 96 kHz.

The size drops noticeably - usually roughly in half, with the exact figure depending on the material: quiet, sparse tracks compress better, dense loud mixes compress less. Beyond saving space, FLAC offers convenient metadata: title, artist, album, and cover art live inside the file itself, whereas AIFF tag support varies between applications.

When this is especially useful

• An archive of studio sessions and masters takes up too much disk or cloud space.
• A finished track needs to go to a musician, producer, or label, and the uncompressed file is too large for email and messengers.
• You are building a personal lossless music library and the AIFF files in it are needlessly heavy.
• Vinyl or tape digitizations saved as AIFF need compact storage with no degradation.
• A backup of an audio archive to an external drive or network storage should take less room.

Common tasks and search situations

• compress a Logic recording without quality loss;
• GarageBand saved a huge file, how to shrink it;
• AIFF too large to send by email;
• studio master in FLAC for a label;
• vinyl digitization from AIFF to FLAC;
• session archive is eating the whole drive;
• convert an AIFF library to FLAC;
• Mac audio to a lossless format.

What to check before converting

1. Make sure the source AIFF plays without clicks or dropouts: defects in the source will carry into the result.
2. If it is a final master, note its parameters - sample rate and bit depth - and verify them on the resulting FLAC.
3. When converting a large archive, start with one file and check it in the application you plan to use next.

Format and conversion limits

Lossless compression does not work miracles on size: FLAC will roughly halve the file, but it will not shrink it tenfold the way lossy formats do. If you need a genuinely small file for a draft or phone listening, it is more honest to pick a lossy format - for example AIFF to MP3.

Also consider the compatibility of your working tools: some studio applications prefer uncompressed formats and may not open FLAC directly. In that case FLAC works well as an archive format: store in it, and convert back to uncompressed audio for work.

Related tasks

If an application or device needs uncompressed audio in a more common format, use AIFF to WAV: a transfer with no compression and no losses.

If you need a small file for a phone, a draft, or a messenger, use AIFF to MP3.

If you need to losslessly convert old Monkey's Audio CD rips, see APE to FLAC.