How to convert AAC to FLAC
1. Upload AAC
Select or drag and drop your AAC file into the converter.
2. Choose FLAC
Select FLAC as your output format. You can process multiple files at once.
3. Download
Click convert and download your new FLAC file instantly.
Format Details
AAC
AAC (Advanced Audio Coding) is a lossy audio compression format standardized by ISO/IEC and designed as a higher-quality successor to MP3. It achieves better audio fidelity than MP3 at the same bit rate by using more advanced psychoacoustic models and encoding techniques. AAC is the default audio format for iTunes, Apple Music, YouTube, and all iOS devices, and is supported natively across virtually every modern platform.
FLAC
FLAC (Free Lossless Audio Codec) is an open-source audio format that compresses audio without any loss of quality, allowing perfect bit-for-bit reconstruction of the original recording. It typically reduces file sizes by 40-60% compared to uncompressed WAV while remaining completely lossless. FLAC is the format of choice for audiophiles, music archivists, and mastering engineers who require studio-quality audio fidelity in a manageable file size.
Frequently Asked Questions
How do I convert AAC to FLAC?
Upload your AAC file on Convertek, select FLAC as the output format, then click Convert. Your FLAC file will be ready to download instantly.
Is the AAC to FLAC converter free?
Yes. Converting AAC to FLAC on Convertek is completely free with no watermarks. Fair upload limits apply (typically 30 MB per file).
Is my file kept after conversion?
No. Files are processed temporarily and not stored permanently. Converted downloads are available only in your browser session.
What is the difference between AAC and FLAC?
AAC and FLAC are different file formats with distinct use cases. Converting between them lets you use your file in software or workflows that require the FLAC format.