AAC to FLAC Converter
Convert AAC files to FLAC format in seconds with optimal quality and zero data retention.
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Prend en charge JPG, PNG, WebP, MP4, MOV, MP3, PDF et plus de 50 formats
Format Comparison
AAC vs FLAC
Technical differences, compression algorithms, and core trade-offs between AAC and FLAC.
| Specification | AAC | FLAC |
|---|---|---|
| Full Name | AAC Advanced Audio Coding | FLAC Lossless Audio |
| Compression Type | Lossy | Lossless |
| Transparency Support | No | No |
| Developer | Bell Labs, Fraunhofer, Dolby, Sony, Nokia | Xiph.Org Foundation (Josh Coalson) |
| Year Introduced | 1997 | 2001 |
AAC Key Advantages
- ✓Significantly better audio clarity than MP3 at identical bitrate
- ✓Standard audio codec for YouTube, Apple Music, and Bluetooth AAC
FLAC Key Advantages
- ✓True studio lossless audio quality (up to 24-bit/192kHz Hi-Res)
- ✓Halves the size of raw WAV files
- ✓Open-source and royalty-free
How It Works
How to Convert AAC to FLAC
Three straightforward steps to convert your file.
1. Select your AAC files
Drag and drop your AAC files into the upload box or click to select from your device.
2. Adjust settings (Optional)
Fine-tune optional parameters such as resolution, compression quality, or audio bitrate.
3. Download your FLAC
Click "Convert Now" to process your files and instantly download the resulting FLAC files.
Why Choose HyperHelix Convert
Why Choose HyperHelix Convert
Engineered for speed, uncompromised quality, and complete privacy.
Lightning-Fast Speed
High-speed conversions powered by dedicated multi-threaded processing servers.
Pristine Output Quality
State-of-the-art engines (Sharp, FFmpeg) preserve visual clarity and sound fidelity.
Batch Processing
Upload up to 30 files in parallel and download all results in a single ZIP archive.
100% Private & Secure
Encrypted via 256-bit SSL and permanently deleted from our servers after 2 hours.
Granular Controls
Fine-tune resolution, CRF, bitrate, sample rates, channels, and crop/trim bounds.
Works on All Devices
Zero installation required. Runs seamlessly in Safari, Chrome, Edge, and mobile browsers.
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Frequently Asked Questions
Frequently Asked Questions about AAC to FLAC
Clear answers to common questions about file conversions, options, and privacy.