Tools / File Converter / AU to AIFF Converter

AU to AIFF Converter

Convert AU files to AIFF. Free, without uploading.

This tool converts AU files to AIFF. Sun/NeXT audio.

AIFF is Apple’s uncompressed audio format, the Mac counterpart of WAV. AIFF is lossless, so the audio keeps the quality it has in the AU 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 AU 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 AIFF file.

Frequently asked questions

Will audio quality drop when converting to AIFF?

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