What is FLAC?
FLAC (Free Lossless Audio Codec) is an open-source audio format that compresses audio without any quality loss, preserving the exact original audio data while reducing file size by 40-60% compared to uncompressed WAV.
What is it?
FLAC (Free Lossless Audio Codec) is an open-source audio format that compresses audio without any quality loss, preserving the exact original audio data while reducing file size by 40-60% compared to uncompressed WAV.
Understanding FLAC helps you choose the right format for your specific needs and workflow.
Technical Specifications
Pros & Cons
Advantages
Decoding a FLAC file produces bit-for-bit identical audio to the original - no quality loss whatsoever.
FLAC compresses audio by 40-60% without any quality loss, saving significant storage compared to WAV or AIFF.
FLAC is completely free and open-source with no licensing fees or patent restrictions.
Supports comprehensive tags for artist, album, artwork, lyrics, and ReplayGain data.
Disadvantages
FLAC files are typically 3-5x larger than equivalent MP3 files, using significantly more storage.
Most music streaming services use lossy formats. Only Tidal and Qobuz offer FLAC streaming.
Apple iTunes and iOS do not support FLAC natively; you need to convert to ALAC for Apple devices.
Decoding high-resolution FLAC files requires more processing power than MP3 on older hardware.
When to Use It
Here are the most common scenarios where FLAC is the right choice:
Music Archiving
Audiophiles and music collectors use FLAC to rip CDs with perfect quality preservation.
Hi-Res Music
High-resolution audio (24-bit/96kHz or higher) is distributed in FLAC for audiophile listening.
Recording Masters
Musicians and producers store master recordings in FLAC before converting to lossy formats for distribution.
Home Theater
FLAC is used for lossless surround sound audio in home theater setups.
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Start Converting NowFrequently Asked Questions
Can you hear the difference between FLAC and MP3?
For most people in normal listening conditions, no. The difference is audible only on high-end audio equipment with trained ears.
Is FLAC worth the larger file size?
If storage is not a concern and you have quality audio equipment, yes. For casual listening on earbuds, high-quality MP3 is sufficient.
Can iPhone play FLAC?
Not natively. iOS does not support FLAC. Use VLC app, or convert to ALAC (Apple Lossless) for native iPhone playback.
How do I convert CD to FLAC?
Use EAC (Exact Audio Copy) or dBpoweramp for accurate CD ripping to FLAC. These tools verify data integrity during ripping.
What is the difference between FLAC and ALAC?
Both are lossless. FLAC is open-source and widely compatible; ALAC (Apple Lossless) is Apple's equivalent used in iTunes and iOS.