Did you end up building one? Would you be willing to share it?

I don’t know about a free calculator. But I have blogged a couple of times about simple calculations in these blog posts:

http://blog.lilybiri.com/playing-with-numbers-part-1

http://blog.lilybiri.com/playing-with-numbers-part-2

Hi REB56,

I don’t know if there is something available off the shelf. But I created a simple calculator in HTML and used it in some projects.

You can add this as an web-object to your captivate project. It is pure HTML/Javascript; feel free to use and modify it.