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Xcalc, a freeware and powerfull calculator for windows 98,2000,XP,Vista,7. This tiny application supports decimal, hex, complex, octal, binary and other systems.

Calculations with basic functions such as sin, asin, ln, exp etc. are a piece of cake! There are available three different appearance modes for your results: scientific, engineering and normal. You can define how many fractional digits you want to keep for your calculations (form 0 to as many as possible) and store upto 10 results. Xcalc also allows you to configure it's fonts, colors, size, warning sounds etc.

How to use XCALC:

It is simple, but completely different from windows calculator usage. Xcalc has a stack (LIFO). You insert upto 4 numbers in your stack and then you can do your maths. For example if you want to do 2+3

1) click "2"
2) click "Enter"
3) click "3"
4) click "+"

Then you have the result "5". In other words, the inserted number "2" is added to the typed number "3". Now your stack contains three "0" and the number "5". If you click multiplication button ("x") you will get "0", because xcalc will multiply "5" with "0". In order to clear your result but not your stack you can press "backspace" button on your keyboard or click the "<--" button. Finally if you want to clear the whole stack then press "shift-Z" or click "Clstk" button.

Xcalc is written by Bernt Ribbum and works fine under win XP, 2000, 98. Win7 and Vista are also supported but you will have to "unblock" the XCALC.chm file in order to receive online help.