Convert AAC to FLAC
Free, fast AAC-to-FLAC conversion.
Video and audio are processed with ffmpeg in your browser — large files are slow and use a lot of memory. Keep files under a few hundred MB for best results.
About the AAC and FLAC formats
AAC. AAC is a modern lossy codec offering better quality than MP3 at similar sizes.
FLAC. FLAC is a lossless audio format that compresses without any quality loss.
Frequently asked questions
How do I convert AAC to FLAC?
Drop your AAC files into the box above and click Convert. The FLAC file is generated instantly and ready to download.
Will the quality stay the same?
FLAC keeps full quality, so your converted file looks identical to the original.
Is AAC to FLAC conversion free?
Completely free, with no sign-up, watermarks or file-size paywalls.