Convert AIFF to FLAC Online Free
Convert AIFF audio to FLAC — a lossless format that compresses uncompressed AIFF audio by 40-60% with zero quality loss. Ideal for archiving Mac audio recordings on space-efficient open-standard FLAC.
By ChangeThisFile Team · Last updated: March 2026
ChangeThisFile converts your AIFF to FLAC using FFmpeg on secure servers. FLAC is a lossless compressed format that stores all audio data from the AIFF with zero quality loss while reducing file size by 40-60%. FLAC is open, royalty-free, and widely supported on Linux, audiophile players, and streaming services like Tidal. Files are auto-deleted after conversion, free with no signup.
Convert AIFF to FLAC
Drop your AIFF file here to convert it instantly
Drag & drop your .aiff file here, or click to browse
Convert to FLAC instantly
AIFF vs FLAC: Format Comparison
Key differences between the two formats
| Feature | AIFF | FLAC |
|---|---|---|
| Compression | Uncompressed PCM | Lossless compressed |
| File Size (3 min) | ~30–60 MB | ~20–35 MB (40-60% smaller) |
| Audio Quality | Lossless (perfect) | Lossless (identical quality) |
| macOS Native | Yes | Requires third-party app |
| Linux Native | Limited | Excellent |
| Open Standard | Yes (published by Apple) | Yes (royalty-free) |
| Audiophile Players | Good support | Best-in-class support |
| Streaming (Tidal/Deezer) | Rare | Native lossless format |
When to Convert
Common scenarios where this conversion is useful
Reducing AIFF archive storage size
Large AIFF recording archives can be compressed losslessly to FLAC, saving 40-60% storage space with zero quality loss. FLAC is the recommended format for lossless audio archiving.
Cross-platform lossless distribution
AIFF has limited Windows and Linux support. FLAC is universally supported across Windows, macOS, Linux, Android, and audiophile players. Convert AIFF to FLAC for cross-platform lossless sharing.
Audiophile streaming service uploads
Services like Tidal Masters and Deezer HiFi use FLAC for lossless content. Convert AIFF masters to FLAC for upload to lossless streaming distribution services.
Linux audio system integration
Linux audio players (Rhythmbox, Clementine, Amarok) and media servers (Plex, Jellyfin) support FLAC natively. Convert AIFF recordings from macOS to FLAC for Linux-based playback systems.
Roon and network audio server libraries
Network audio servers like Roon, Naim, and Bluesound prefer FLAC for lossless streaming. Convert AIFF recordings to FLAC to integrate them into your home audio server library.
Who Uses This Conversion
Tailored guidance for different workflows
Musicians & Producers
- Convert AIFF recordings to FLAC for distributing tracks to streaming platforms or collaborators
- Transform AIFF stems to FLAC for sharing with other producers or mixing engineers
Podcasters
- Convert AIFF episode recordings to FLAC for publishing on Apple Podcasts, Spotify, or RSS feeds
- Transform AIFF interview recordings to FLAC for editing in Audacity or Adobe Audition
Content Creators
- Convert AIFF audio from video shoots to FLAC for use as background music or voiceovers
- Extract and convert AIFF audio to FLAC for repurposing content across multiple platforms
How to Convert AIFF to FLAC
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1
Upload your AIFF file
Click the upload area or drag and drop your AIFF file. Files up to 25MB (free tier; 500MB on Pro) are accepted. The upload uses HTTPS encryption for secure transfer.
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2
Convert to FLAC
Click Convert. FFmpeg reads the AIFF PCM audio and losslessly compresses it into FLAC format. No audio data is lost — FLAC is bit-for-bit identical to the source AIFF.
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3
Download your FLAC file
Download the FLAC file. It will be 40-60% smaller than the AIFF source. The file is automatically deleted from our servers after download.
Frequently Asked Questions
Yes. Both AIFF and FLAC are lossless formats. Converting between them is a lossless operation — FLAC losslessly compresses the same PCM audio data from the AIFF. Decoding the FLAC back produces bit-for-bit identical audio to the original AIFF.
FLAC typically achieves 40-60% compression compared to uncompressed AIFF. A 50 MB AIFF will typically become 20-30 MB as FLAC, depending on the audio content complexity.
Yes. FFmpeg preserves the original bit depth (16-bit or 24-bit) and sample rate (44100 Hz, 48000 Hz, or higher) from the AIFF when creating the FLAC output.
Yes, mostly. FFmpeg converts AIFF metadata to FLAC's Vorbis comment format. Basic fields like title, artist, and album transfer. AIFF-specific loop point metadata (MARK/INST chunks) does not transfer to FLAC.
Not natively in the Music app. The iPhone Music app does not support FLAC. VLC for iOS can play FLAC files. For Apple device library use, AIFF or M4A are better choices.
Yes. FFmpeg handles 24-bit AIFF and outputs 24-bit FLAC, preserving the full high-resolution quality of studio recordings for audiophile playback systems.
Both are lossless and equally suitable for archiving audio quality. FLAC is smaller (uses compression) and more universally supported across platforms. AIFF is better for macOS-specific workflows. FLAC is generally the recommended archival format.
Yes. Files are uploaded over HTTPS, processed by FFmpeg on our secure server, and automatically deleted after download. We do not retain or analyze your audio files.
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