How do I convert an AU file to CAF?

Open LetsConvert’s AU to CAF page, drag your .au file into the upload zone, select CAF as the target format, then hit the Convert button. After processing, download the resulting .caf file to your Mac or PC. No extra software needed—everything runs in your browser.

Why convert from AU to CAF?

AU format is tied to old Sun/NeXT systems, while CAF is Apple’s modern audio container used in Logic Pro, Final Cut Pro, and iOS development. Converting to CAF gives you better metadata support, automatic sample rate handling, and compatibility with Apple’s audio units without losing original audio quality.

How does the conversion handle audio quality and metadata?

Our converter preserves the audio's sample rate, bit depth, and channel layout exactly when the AU is PCM. If your AU contains compressed µ-law audio, we decode it to PCM before wrapping into CAF, so you get lossless output. Metadata like artist, title, and album (if present) is carried over to CAF's Info Chunk. However, unsupported metadata fields like cuesheets may be dropped.

Is AU-TO-CAF free to use?

Yes, AU-TO-CAF on LetsConvert is 100% free with no registration or hidden fees required.

Are my uploaded files safe and secure?

Yes! File privacy and security are guaranteed. Basic conversions run locally in your browser. Files sent for server processing are automatically deleted within 1 hour.

Does this converter work on mobile phones and tablets?

Yes! AU-TO-CAF works seamlessly across iPhone, Android, iPad, Mac, Windows, and Linux browsers without installing any app.

Is there any software installation required?

No software or browser extension installation is needed. All conversions are performed directly online.

AU➔CAF· 100% Free & 320kbps

AU-TO-CAF

Convert AU (Sun/NeXT audio) to CAF (Apple Core Audio) for seamless Logic Pro and Final Cut workflow. Preserve bitrate, metadata, and quality.

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4.9 / 5.0(39 user ratings)

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Choose Au audio file or drag & drop here

Supports up to 50MB · Studio quality sound

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AU

AU File Format

Source Format

AU is a standardized digital file format supported by LetsConvert. Convert AU files securely, privately, and instantly online with zero software installation, bank-grade encryption, and automatic 60-minute file purging.

Category: Data & Media File

MIME Type: application/au

Developer: Standard Organization

Best For: Converting and managing AU files across devices and applications.

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CAF

CAF File Format

Target Output

CAF is a standardized digital file format supported by LetsConvert. Convert CAF files securely, privately, and instantly online with zero software installation, bank-grade encryption, and automatic 60-minute file purging.

Category: Data & Media File

MIME Type: application/caf

Developer: Standard Organization

Best For: Converting and managing CAF files across devices and applications.

💡 Technical Guide & Conversion Insights

Why Convert AU to CAF?

Converting from AU (AU File Format) to CAF (CAF File Format) is essential when you need enhanced compatibility, reduced file size, or specific feature support. While AU is ideal for Converting and managing AU files across devices and applications., CAF offers superior advantages for Converting and managing CAF files across devices and applications.. Our secure online conversion engine ensures that all your AU file attributes, geometry, quality, and metadata are seamlessly preserved during the transformation into CAF.

● AU Key Advantages:

✓Standard format compatibility
✓Fast online conversion processing
✓Zero software install required

● CAF Key Advantages:

★Standard format compatibility
★Fast online conversion processing
★Zero software install required

AU vs CAF Comparison Table

Detailed technical differences and capabilities between AU File Format and CAF File Format.

Feature / Attribute	AU	CAF
Primary Format Name	AU File Format	CAF File Format
Primary File Category	Data & Media File	Data & Media File
Standard MIME Type	application/au	application/caf
Core Developer / Standard	Standard Organization	Standard Organization
Optimal Use Case	Converting and managing AU files across devices and applications.	Converting and managing CAF files across devices and applications.

❓ Common Questions

Frequently Asked Questions (AU to CAF)

Everything you need to know about converting AU to CAF with LetsConvert.

To convert your AU file to CAF, upload your file by dragging and dropping it into the upload box or selecting it from your device. Adjust any optional quality or dimension settings, then click 'Convert'. Your converted CAF file will be ready for instant high-speed download within seconds.

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100% Secure & Automatic File Purging

Your AU files are encrypted with 256-bit SSL and permanently deleted from our servers within 60 minutes.

● Zero File Storage

How to Convert AU-TO-CAF

Select or drop your Au file.

Initiate the CAF conversion process.

Download your converted CAF file.

⚡ Related Audio Tools

AU-TO-CAF

AU

CAF

Why Convert AU to CAF?

● AU Key Advantages:

● CAF Key Advantages:

AU vs CAF Comparison Table

Frequently Asked Questions (AU to CAF)

100% Secure & Automatic File Purging

How to Convert AU-TO-CAF

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