Calc98 is a pocket calculator simulator program for the Microsoft Windows operating system.
It is a replacement for the calculator program which is
included with the operating system, with many additional features and greater flexibility.
Features:
Especially designed for scientific and engineering users
Includes a wide range of units conversions and scientific functions
Statistics, financial and time functions, including a stopwatch
Downloadable database of conversions and constants for use with Calc98 is
available at the website.