Convert AAC to FLAC Online — Free & Fast | AnyConv

AAC to FLAC Converter

Quickly convert multiple aac files to flac — free & online.

Drag & drop your files here or click to upload

How to convert AAC to FLAC online

Follow these simple steps to convert aac files to flac using AnyConv. It works on all devices — Windows, Mac, Linux, iPhone, Android.

Upload your AAC file

Drag & drop your file into the upload area. You can also click to select it manually. Max file size: 100 MB.

Start converting

Hit the “Convert” button to turn your AAC into FLAC. The process usually takes just a few seconds.

Download your FLAC

Once ready, download your converted file instantly. The download link is private and only works on your device.

What is a AAC file?

AAC, or Advanced Audio Coding, is a widely used audio format known for delivering high-quality sound at relatively low bitrates. Developed as the successor to MP3, it became popular for streaming and digital distribution thanks to its efficient compression algorithms and broad device support.

AAC is the default format for Apple’s iTunes, iOS devices, and YouTube audio. It supports multi-channel audio, a wide frequency range, and features like perceptual noise shaping, making it a favorite for music, podcasts, and even broadcasting.

How to open AAC files

You can open AAC files with most modern media players like VLC, iTunes, Windows Media Player, and QuickTime. They’re also supported on smartphones and tablets without any additional software.

If you need to convert AAC to MP3 or another format, AnyConv provides an easy online tool for quick conversion.

Key facts about AAC

  • Full name: Advanced Audio Coding
  • Extension: .aac
  • MIME type: audio/aac
  • Developed by: Fraunhofer, Dolby, Sony, AT&T
  • Initial release: 1997

Useful links and resources

What is a FLAC file?

FLAC (Free Lossless Audio Codec) is one of the most popular formats for storing high-quality digital music without any loss in audio fidelity. It compresses audio efficiently while preserving every bit of the original recording — unlike MP3 or AAC, which are lossy.

FLAC is widely used by audiophiles and music collectors due to its open-source nature, excellent compression ratio, and support for rich metadata. It has become a standard in the world of lossless digital audio.

How to open FLAC files

FLAC files can be played with VLC, Foobar2000, Winamp, and many modern smartphones. FLAC is also supported by popular audio editors and library tools like MusicBee.

To convert FLAC to MP3 or AAC for portable use, AnyConv offers a free and fast online solution.

Key facts about FLAC

  • Full name: Free Lossless Audio Codec
  • Extension: .flac
  • MIME type: audio/flac
  • Developed by: Xiph.Org Foundation
  • Initial release: 2001

Useful links and resources

Convert from AAC

Need to change your AAC files to a different format? Below are all the available tools to help you turn AAC into the format you need.

Convert to FLAC

Want to get a file in FLAC format? Choose the original format you’re starting with — AnyConv can quickly convert dozens of file types into FLAC.

❓ Frequently Asked Questions

Answers to common questions about converting AAC to FLAC
  • Do I need to register to convert AAC files?
    Not at all! You can convert AAC to FLAC without signing up or installing anything.
  • Is it safe to convert AAC to FLAC on AnyConv?
    Absolutely. All AAC and FLAC files are securely handled and automatically deleted after 1 hour. Nobody can access your data.
  • Will the quality change after converting AAC to FLAC?
    We do our best to preserve the original quality during AAC to FLAC conversion. The result is accurate and clean.
  • How long does it take to convert AAC to FLAC?
    Most conversions from AAC to FLAC take just a few seconds — even for larger files.
  • Can I upload more than one AAC file?
    Yes, batch conversion is supported. You can convert multiple AAC files to FLAC at once — fast and easy.
  • What browsers support AAC to FLAC conversion?
    All modern browsers! Chrome, Firefox, Safari, Edge — AnyConv runs online and supports converting AAC to FLAC on any platform.
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