M4A→AUConverter
Convert your M4A files to AU format instantly. Free, fast, and secure - your files never leave your browser.
↔ Convert AU to M4A insteadDrop file or click to browse
Max 100MB • Auto-deletes after 3 min
How to Convert M4A to AU
Upload Your File
Drag & drop your M4A file or click to browse. Files up to 100MB are supported.
Convert
Click "Convert to AU" and wait a few seconds for processing.
Download
Download your converted AU file instantly. No registration needed.
Why Convert M4A to AU?
Converting M4A to AU helps ensure compatibility with your preferred audio player, editing software, or streaming platform.
About M4A and AU
What is M4A?
M4A is an audio-only MPEG-4 container, typically containing AAC-encoded audio. It's Apple's preferred audio format for iTunes and Apple Music downloads.
What is AU?
AU (.au) is a widely-used audio format. ModConvert supports converting AU files to 16 different formats including MP3, WAV, FLAC, OGG and more.
Frequently Asked Questions
How do I convert M4A to AU?
Upload your M4A file using the converter above, then click "Convert". Your file will be processed and you can download the converted AU file immediately. The entire process takes just seconds.
Is it free to convert M4A to AU?
Yes, ModConvert is completely free to use. There are no hidden charges, no registration required, and no watermarks on your converted files.
Is my M4A file safe when converting?
Absolutely. Your files are processed securely and are never stored permanently on our servers. Files are automatically cleaned up after conversion to protect your privacy.
What is the maximum file size for M4A to AU conversion?
You can convert M4A files up to 100MB in size. This covers most common use cases for audio files.
Can I convert multiple M4A files at once?
Yes, you can upload and convert multiple M4A files. Each file will be converted to AU format individually for the best quality results.