Convert AAC to FLAC
Free, fast and secure — convert AAC to FLAC right in your browser.
AAC
FLAC
Move your AAC into a lossless FLAC
Converting AAC to FLAC lifts your file into a format that keeps every detail intact — ready for editing, archiving or high-quality output.
How to convert AAC to FLAC
- 1 Drop your AAC file into the converter above.
- 2 It is converted to FLAC automatically — no settings to fiddle with.
- 3 Download your new FLAC file instantly.
AAC vs FLAC
| Feature | AAC | FLAC |
|---|---|---|
| Compression | Lossy | Lossless |
| MIME type | audio/aac | audio/flac |
| Best for | Streaming and modern playback where quality-per-byte beats raw compatibility. | Archiving and high-fidelity music libraries where quality must be preserved. |
About the formats
AAC
AAC audio
AAC is the successor to MP3, offering better sound at the same bitrate. It is the standard for streaming services, YouTube and Apple devices.
Strengths
- Better quality than MP3 at equal size
- Standard for streaming platforms
- Wide modern-device support
Limitations
- Lossy compression
- Slightly less universal than MP3
- No lossless mode
Best for: Streaming and modern playback where quality-per-byte beats raw compatibility.
FLAC
FLAC audio
FLAC is a lossless format that compresses audio with no quality loss — typically to about half the size of WAV. It is the audiophile choice for archiving music.
Strengths
- Lossless, full quality
- Smaller than WAV
- Rich metadata and tagging
Limitations
- Larger than lossy formats
- Not supported by every player
- Overkill for casual listening
Best for: Archiving and high-fidelity music libraries where quality must be preserved.
Frequently asked questions
Upload your AAC file above and it is converted to FLAC automatically. When it is ready, download your new FLAC audio — the whole thing takes just a few seconds in your browser.
Converting AAC to FLAC lifts your file into a format that keeps every detail intact — ready for editing, archiving or high-quality output.
FLAC is a lossless format, so your converted file keeps its full quality with no degradation.
Yes. The converter is free to use, with no watermark and no sign-up required.
Your files are processed securely and are never shared with anyone.