Convert AAC to FLAC on Mac
Convert AAC files to FLAC format on your Mac with Jollycat. Modern lossy audio codec with better quality than MP3 at the same bitrate. Default for Apple devices and YouTube. Move from lossy AAC to lossless FLAC to preserve quality in future edits. All processing runs locally on your Mac — no cloud processing and no uploads required for conversion.
AAC vs FLAC
| Property | AAC | FLAC |
|---|---|---|
| Type | lossy | lossless |
| Compression | Perceptual lossy | Lossless prediction-based |
| Container | No | No |
| Common Codecs | AAC-LC, HE-AAC | FLAC |
| File Extension | .aac | .flac |
| Key Advantage | Better quality than MP3 | Perfect lossless quality |
How to Convert AAC to FLAC on Mac
Open your AAC file
Drag and drop your .aac file onto the Jollycat icon in your macOS dock or menu bar. Jollycat instantly detects the format.
Choose FLAC as output
Select FLAC from the conversion options. Adjust quality settings, bitrate, or resolution if needed.
Convert and save
Click Convert and Jollycat processes the file instantly on your Mac. No uploads required, no waiting — everything runs locally on Apple Silicon.
When to Convert AAC to FLAC
FLAC advantages
Perfect lossless quality. 50% smaller than WAV.
AAC limitations
Less universal than MP3. Patent-encumbered.
Common use cases
Audiophile music library, Lossless music distribution, Audio archival.
AAC to FLAC Conversion Tips
Higher bitrates produce better audio quality but larger files. For music, 256-320 kbps is recommended. For voice recordings, 128 kbps is sufficient.
FLAC uses linear prediction and Rice coding for lossless compression, typically achieving 50-60% size reduction.
Frequently Asked Questions
Is the AAC to FLAC conversion free?
Jollycat is a one-time purchase for $9.99. Once purchased, you can convert AAC to FLAC and use all 1,650+ conversion paths with no limits.
Does converting AAC to FLAC require an internet connection?
No. Jollycat processes everything locally on your Mac. Your AAC files never leave your device — all conversion happens offline using Apple Silicon.
Can I batch convert multiple AAC files to FLAC?
Yes. Drag multiple AAC files onto Jollycat and convert them all to FLAC at once. Batch processing is built in.
Ready to Convert AAC to FLAC?
Jollycat handles AAC to FLAC conversion and 1,650+ other format conversions. All offline on your Mac.
Get Jollycat for Mac