Tools / File Converter / AIFF to AU Converter

AIFF to AU Converter

Convert AIFF files to AU. Free, without uploading.

This tool converts AIFF files to AU. AIFF is Apple’s uncompressed audio format, the Mac counterpart of WAV.

Sun/NeXT audio. AU is lossless, so the audio keeps the quality it has in the AIFF file.

Conversion runs on your device; your file is never sent to a server. The components download once on first use, and later conversions start right away.

How to use

1. Choose the AIFF file, drag it in, or paste its link.
2. Choose the audio quality; optionally enter a start and end time.
3. Press "Convert" and download the AU file.

Frequently asked questions

Will audio quality drop when converting to AU?

No. AU is lossless.

Is there a file size limit?

No fixed limit; your device’s memory decides. Computers usually handle files up to 1–2 GB.

Is my file uploaded?

No. Your AIFF file is converted to AU inside your browser.