Free AAC to FLAC Converter

No software needed. Convert AAC to FLAC right here, right now. Your files never leave your device.

100% Private

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Works Offline

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About AAC to FLAC Conversion

Convert between audio formats for optimal compatibility and quality. Match the perfect balance of file size and sound quality for your specific needs—from lossless archival to compressed streaming.

How to Convert AAC to FLAC

Converting files has never been easier or more secure. MixConvert uses advanced browser-based technology to process your files instantly without uploading them to a remote server. Follow these simple steps to get started:

Select Your Files: Click "Choose Files" or simply drag and drop your AAC files (.aac) into the upload area.
Choose Output Format: Verify that FLAC (.flac) is selected as your target output format.
Convert Instantly: Hit "Convert All" and watch as your files transform instantly using our browser-based engine.
Download: Download your converted FLAC files individually, or grab them all at once as a ZIP archive.

AAC to FLAC FAQ

How do I convert AAC to FLAC on my phone?

MixConvert works seamlessly on iOS and Android devices. Open this page in your mobile browser, select your AAC files, and convert to FLAC with the same ease as on desktop.

Is it safe to convert AAC to FLAC here?

Yes, your files never leave your device. We use WebAssembly technology to process AAC files locally in your browser, making this the most private way to convert to FLAC.

Is there a file size limit for AAC to FLAC conversion?

There are no arbitrary size limits. Since conversion happens locally, your device's RAM and processing power are the only constraints. Most modern devices handle files of any practical size.

How long does AAC to FLAC conversion take?

Most AAC files convert to FLAC in just a few seconds. Processing time depends on file size and your device's CPU. Large video files may take a bit longer.

Can I batch convert multiple AAC files?

Yes! Select multiple AAC files and convert them all to FLAC simultaneously. You can then download each file or grab everything as a single ZIP archive.

What bitrate settings are used for AAC to FLAC?

We use optimal bitrate settings that balance quality and file size for FLAC output. The conversion preserves the essential audio characteristics of your AAC files.