Hello

I'm looking for a nice calculator (for Windows), which can also handle very big numbers. I downloaded a few, but I don't like them. I want to able to do several arithmatic operations on big numbers, like x^y, sqrt(x), and so on.
Can someone suggest me such a calculator?

For XP look for the Powertoy Calculator

Yes, I already tried that one...but I have Windows 2000..so I couldn't install it. Maybe I had to be more specific in my previous post.

Try Hugs. It's a compiler for Haskell but also my favourite calculator

I tend to use a Python interpreter as a calculator (though it has a few annoyances, like '3 / 2' being treated as integer division by default). Haskell also works, but I'd recommend GHC, which allows you to define variables and functions from interactive mode (HUGS doesn't allow that, since it is hard to implement for Haskell).