File Convert

Convert AAC to AU

Free online AAC-to-AU converter — upload a AAC file and download a AU. Fast, private, no signup.

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AAC vs AU

AAC

Advanced Audio Coding (lossy, MP3 successor).

About AAC ↗

AU

Sun/NeXT AU — a simple, long-lived PCM audio container.

About AU ↗

AAC to AU: frequently asked questions

How do I convert AAC to AU?

Drop your AAC file into the converter above — we auto-detect the real format from its bytes, convert it, and give you a AU to download. No software to install.

Is the AAC to AU converter free?

Yes. Convert AAC to AU for free right in your browser, with no account needed to get started.

Is it safe and private?

Your file is transferred over an encrypted connection and anonymous uploads are temporary. You can also view and strip metadata (location, device, author) before you download.

What's the difference between AAC and AU?

Advanced Audio Coding (lossy, MP3 successor). Sun/NeXT AU — a simple, long-lived PCM audio container.

Related conversions

Convert AAC to: MP3 · WAV · FLAC · M4A · AC3 · AIFF · CAF · DTS · M4B · M4R

Convert to AU from: AC3 · AIFF · AMR · APE · CAF · DFF · DSF · DTS · FLAC · M4A

Browse all supported formats →