Will converting AAC to FLAC improve my audio quality?

No, the conversion preserves the audio quality present in the AAC file but cannot restore any data lost during AAC compression.

Can I add artwork and metadata during conversion?

Yes, FLAC supports rich metadata including embedded artwork and Vorbis comments, which can be added or preserved during conversion.

Is FLAC compatible with all devices?

FLAC is widely supported on many desktop players and hardware devices, but it may not be playable on all consumer devices and some streaming services.

Convert Your AAC File to FLAC Format - Online Audio Converter

Easily convert AAC audio files to FLAC format for lossless quality preservation, comprehensive metadata support, and high-resolution playback. Learn how to quickly change your AAC files into FLAC with our user-friendly online tool.

Upload Your File | Maximum Size Upto 25MB

Quick Access To 12 AAC File Conversion Pairs

What Is This Tool?

This tool converts audio files from AAC (Advanced Audio Coding), a lossy compression format commonly used for streaming and digital music, into FLAC (Free Lossless Audio Codec), a lossless audio format that preserves original quality and supports rich metadata.

How to Use This Tool?

Upload your AAC audio file in raw .aac, MP4, or M4A container format
Choose FLAC as the desired output format for lossless audio
Optionally add or edit metadata such as artwork and comments
Click the convert button to start the conversion process
Download the resulting FLAC file for local playback or further editing

Key Features

Convert AAC files to FLAC for lossless audio preservation
Preserve and add rich metadata, including Vorbis comments and embedded artwork
Supports audio profiles such as AAC-LC and HE-AAC for input
Output files suitable for archival, editing, and high-resolution playback
Browser-based, easy to use with fast conversion speeds

Examples

Convert a purchased AAC album in M4A format to FLAC to create a high-quality local music library with embedded artwork and metadata.
Import AAC podcast episodes into FLAC for editing purposes to avoid additional generational quality loss and preserve full metadata.

Common Use Cases

Archiving downloaded AAC tracks into a lossless FLAC library for backup and local playback
Preparing audio files for mastering or editing workflows that require lossless file formats
Converting files to enhance compatibility with FLAC-compatible devices and software with better metadata support

Tips & Best Practices

Keep in mind that converting from AAC to FLAC does not restore original audio quality lost during AAC compression
Use FLAC for local storage when preserving audio fidelity and metadata is important
Ensure proper metadata tagging especially when converting raw AAC streams that lack embedded tags
Verify device compatibility for FLAC playback before conversion if intended for portable use

Limitations

Conversion does not recover audio data removed by AAC lossy compression; FLAC output matches decoded AAC quality exactly
Resulting FLAC files are larger and require more storage and bandwidth than original AAC files
Metadata transfer may be limited if source AAC files are raw streams without tagging
AAC format is subject to patents and licensing, whereas FLAC is open and royalty-free, which may impact encoder availability

Frequently Asked Questions

Will converting AAC to FLAC improve my audio quality?: No, the conversion preserves the audio quality present in the AAC file but cannot restore any data lost during AAC compression.
Can I add artwork and metadata during conversion?: Yes, FLAC supports rich metadata including embedded artwork and Vorbis comments, which can be added or preserved during conversion.
Is FLAC compatible with all devices?: FLAC is widely supported on many desktop players and hardware devices, but it may not be playable on all consumer devices and some streaming services.

Key Terminology

AAC (Advanced Audio Coding): A lossy audio codec standardized by MPEG designed to provide better audio quality than MP3 at similar bitrates.
FLAC (Free Lossless Audio Codec): An open-source lossless audio compression format that preserves original audio data without quality loss.
Vorbis Comments: A metadata format used in FLAC files to store information like artist, album, and embedded artwork.

Quick Knowledge Check

What is the main advantage of converting AAC files to FLAC?

To reduce file size significantly

To preserve audio quality with lossless compression

To add DRM protection to audio files

Which of the following is true about AAC format?

It is a lossless audio codec

It is a lossy audio codec used for streaming and digital music

It stores audio in a seekable block-based stream

Why might metadata transfer be limited when converting raw AAC streams?

Because raw AAC streams usually lack embedded tags

Because FLAC does not support metadata

Because AAC has no container format