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Convert AAC to FLAC Audio Format Online

Upload AAC Audio File

Max 50MB • AAC, MP3, M4A, WAV, FLAC, OGG

100% free and secure – your files are processed instantly and deleted automatically from our server.

How to Convert AAC to FLAC Audio

1

Upload Your AAC

Click the upload area or drag & drop your AAC audio file

2

Choose FLAC Format

Select FLAC or choose from other supported audio formats

3

Convert

Click convert and wait a few seconds for format conversion

4

Download

Get your high-quality FLAC audio file instantly

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Free Online AAC to FLAC Converter - Preserve Lossless Audio Quality

Are you looking to convert your AAC audio files to a high-fidelity, lossless format? Our free online **AAC to FLAC converter** is the perfect solution. FLAC (Free Lossless Audio Codec) is renowned among audiophiles for preserving every detail of the original recording, making it ideal for archiving your music collection or for professional audio work. Unlike AAC, which is a lossy compressed format often used by Apple for smaller file sizes, FLAC maintains perfect sound quality, ensuring no information is lost during compression.

With FileConvertFree's **AAC to FLAC conversion tool**, you can easily transform your compressed AAC files into robust, uncompromised FLAC audio. While converting a lossy format like AAC to FLAC won't magically restore lost data, it will prevent any further degradation, providing a stable foundation for your audio. Our converter is fast, secure, and completely free – no signup, no software installation, and your files are automatically deleted after conversion for privacy.

To get started, simply upload your AAC file, click convert, and download your high-quality FLAC audio. We also offer other essential audio conversions, such as AAC to MP3 for wider compatibility, AAC to WAV for uncompressed editing, and MP3 to FLAC for lossless upgrades of your existing MP3s. Experience premium audio quality with our easy-to-use online tool today.

Frequently Asked Questions

Converting AAC to FLAC is beneficial for audiophiles and anyone seeking the highest audio fidelity. FLAC is a lossless format, meaning it preserves all original sound data without any quality loss, unlike AAC which is a lossy compressed format. It's excellent for archiving music and ensures your audio sounds as good as possible, free from further compression artifacts.

While converting a lossy format like AAC to FLAC will not magically restore the audio data already lost during the AAC compression, it ensures that no further quality is lost. It locks in the existing quality of your AAC file into a lossless container, making it ideal for long-term storage or further editing without additional degradation.

Yes, our free online converter currently supports audio files up to 50MB in size. This limit ensures fast processing and optimal performance for all users.

Absolutely! Our versatile converter supports various audio formats. You can easily convert your FLAC files back to AAC, MP3, WAV, or other supported formats if you need smaller file sizes or different compatibility for your devices.