Free online AAC to FLAC converter

How would I convert .aac audio files to .flac format?

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.aac .flac

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How to convert aac to flac file

June 7, 2026
Audio
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Choose from numerous audio editing tools and converters that allow users to convert Advanced Audio Coding Files directly to Free Lossless Audio Files (.aac to .flac conversion).

Use, for instance, Switch Audio File Converter or MediaMonkey, since these tools allow users to import AAC audio files and export them in FLAC format.

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Understanding AAC and FLAC file formats

AAC (Advanced Audio Codec) is a popular audio format known for its ability to compress audio files without significant loss of quality. It is widely used in streaming services and is compatible with most devices and platforms.

FLAC (Free Lossless Audio Codec) is an audio format that compresses audio files without any loss of quality. It is favored by audiophiles and music enthusiasts who prefer high-quality sound.

Why convert AAC to FLAC?

Converting AAC to FLAC can be beneficial if you want to preserve the audio quality of your files while taking advantage of FLAC's lossless compression. This is particularly useful for archiving music collections or for playback on high-fidelity audio systems.

Best software for AAC to FLAC conversion

One of the best software options for converting AAC to FLAC is dBpoweramp Music Converter. It offers a user-friendly interface and high-quality conversion capabilities.

To convert using dBpoweramp Music Converter, follow these steps:

Open dBpoweramp Music Converter.
Select the AAC file you wish to convert.
Choose Convert To and select FLAC as the output format.
Click Convert to start the conversion process.

Alternative converters

Other reliable converters include Fre:ac and MediaHuman Audio Converter. Both offer straightforward conversion processes and support a wide range of audio formats.

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AAC vs FLAC: format comparison

How the AAC and FLAC formats compare on the properties that matter most for this conversion.

Comparison of the AAC and FLAC file formats
Property	.AAC Advanced Audio Coding	.FLAC Free Lossless Audio Codec
Compression	Lossy	Lossless
Audio quality	High	Lossless
Audio channels	Up to stereo	Up to stereo
Metadata support	Basic	Extensive
Streaming	Yes	Partial
DRM protection	Optional	No DRM
Opens in a web browser	Partial	Partial
Typical file size	Small	Medium
Open standard	Partly open	Yes
Best used for	Music	Music
Introduced	1997	2001
Developer	Fraunhofer IIS, Sony, Dolby, AT&T, Nokia, and others	Xiph.Org Foundation
MIME type	audio/aac	audio/flac

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Frequently asked questions

Is the AAC to FLAC converter free?

Yes, converting AAC to FLAC on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.

How large can my AAC file be?

You can upload AAC files up to 1000 MB and convert up to 100 files at once in a single batch.

What happens to my uploaded files?

Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.

Do I need to install any software to convert AAC to FLAC?

No. The AAC to FLAC conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.

Did the conversion fail?

In most cases, the cause is an incorrect file format. Please upload a valid AAC file for this AAC to FLAC conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.

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Free online AAC to FLAC converter