Convert AAC to FLAC — Free & Private
Convert AAC to FLAC online for free. AAC is a high-efficiency audio format used by Apple and YouTube; FLAC is a lossless audio format that preserves full quality. All processing happens locally in your browser — your files never leave your device.
How to convert AAC to FLAC
- 1
Select your AAC file
Click or drag your AAC file onto the converter above.
- 2
Convert to FLAC
The output format is pre-set to FLAC. Click the convert button to process your file.
- 3
Save instantly
Your converted FLAC file is ready — save it to your device, no email required.
AAC to FLAC — FAQ
Is the AAC to FLAC converter really free?
Yes, completely free. No hidden fees, no watermarks, no file size limits. LocalConvert is open source and free forever.
Are my AAC files safe?
Absolutely. Your files never leave your browser. All AAC to FLAC conversion happens using WebAssembly running locally on your device — no uploads, ever.
How long does AAC to FLAC conversion take?
Most conversions finish in seconds. Larger files may take a little longer depending on your device's speed and memory.
What's the difference between AAC and FLAC?
AAC is a high-efficiency audio format used by Apple and YouTube. FLAC is a lossless audio format that preserves full quality.