Convert AAC to FLAC for Lossless Archival Quality
Convert your Advanced Audio Coding files to Free Lossless Audio Codec online for free. AAC is slightly less universal than MP3 on older hardware and some non-Apple software — FLAC solves that. No registration, no watermarks, instant download.
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Max 100 MB • Max 10 min duration • Max 1080p
How to Convert AAC to FLAC — 3 Steps
FFmpeg transcodes your AAC file to Free Lossless Audio Codec — lossless archival quality.
Upload your AAC file
Select your AAC file from iTunes. Files up to 100 MB are accepted.
Confirm and convert
Confirm you own the file and click Convert to FLAC. Processing typically completes in seconds.
Download your FLAC file
Download your FLAC immediately — ready to flac decodes to bit-identical audio.
Why Convert AAC to FLAC?
AAC (Advanced Audio Coding) is slightly less universal than MP3 on older hardware and some non-Apple software. Converting to FLAC gives you lossless and half the size.
Frequently Asked Questions
Why convert AAC to FLAC?
AAC (Advanced Audio Coding) is slightly less universal than MP3 on older hardware and some non-Apple software. Converting to FLAC gives you flac decodes to bit-identical audio — indistinguishable from wav.
Will converting AAC to FLAC reduce audio quality?
Converting lossy AAC to lossless FLAC does NOT recover lost audio quality. The quality ceiling is set by the original AAC file. The FLAC output is simply a lossless container around the decoded audio.
What AAC files are supported as input?
You can upload AAC files from iTunes, Apple Music, iPhone recordings, and streaming platform downloads. Files must be under 100 MB.
What are the best uses for FLAC format?
FLAC (Free Lossless Audio Codec) is ideal for: flac decodes to bit-identical audio — indistinguishable from wav; flac is typically 40–60% smaller than equivalent wav files; long-term music archival in flac protects quality for decades.
Is my audio file kept private?
Yes. Files are processed privately and automatically deleted within 60 minutes. We never store, sell, or analyse your content.
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