Downloading CCUnits 3.5 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. The software is included in Education Tools. This software is a product of Castillo Bueno Systems.
The most popular version among CCUnits users is 3.5. The common filename for the program's installer is CCUnits.exe. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software.
From the developer:
CCUnits is a program for Windows 95/ 98/ ME/ 2000/ NT to convert units of measure common in engineering and science. Also, several physical constants can be consulted. It includes 56 magnitudes and in each magnitude the most frequently used units have been chosen.
You may want to check out more software, such as StatPlus 2007, GenScn or Flashcard Tables, which might be related to CCUnits.