AIFF to FLAC Audio Converter
Drop your AIFF files — the FLAC audio is generated in your browser in seconds. Multiple files at once, no upload on the fast path.
9,214+ audio files converted
Need your audio as FLAC? Drop the files and they are re-encoded right on this page — no install, no sign-up, no queue. Typical FLAC output is ~5 MB/min (lossless), and the work happens locally so your audio stays on your machine.
Looking to programmatically convert AIFF to FLAC?
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
AIFF vs FLAC: how they compare
The numbers and capabilities at a glance, so you know what you're trading.
AIFF
- Year released
- 1988
- Compression
- Uncompressed (PCM)
- Lossless
- Yes
- Channels
- Multichannel
- Player support
- Apple ecosystem
- Best for
- Editing & mastering on Mac
FLAC
- Year released
- 2001
- Compression
- Lossless
- Lossless
- Yes
- Channels
- Multichannel
- Player support
- Wide
- Best for
- Archival lossless
Real AIFF → FLAC 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 | AIFF size | FLAC size | Change |
|---|---|---|---|
| Music (broadband) | 1.01 MB | 415.4 KB | -60% smaller |
| Speech (narrowband) | 516.8 KB | 271.3 KB | -48% smaller |
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 FLAC
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.
- FLAC 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.
When NOT to convert to FLAC
Cases where a different format serves you better.
When the file must play on older devices
FLAC is not supported everywhere (Wide). For old phones, car stereos, or legacy software, MP3 or AAC is a safer choice than FLAC.
The importance of a good audio conversion
Why getting AIFF → FLAC right matters more than you think.
Frequently asked
The basics everyone asks before dropping a track.
Convert AIFF to other formats
Convert other formats to FLAC