A + Calc is a complete scientific calculator that comes equipped with everything that can be asked of a calculator with these characteristics (square roots, clearing the unknowns of the X and Y, breasts, cosines, etc.), but also has certain Tools of great interest.
Among its most notable elements is its ability to save your own formulas, which just by changing one of the parameters recalculates the final value, and can also work in both decimal and hexadecimal, as well as converting between different numerical formats.
A + Calc also allows you to store up to a total of 30,000 characters, as well as being able to operate with up to 100 levels of parentheses.
To use this shareware version you must write the word freecalc in the registry.
You can free download A+ Calc 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.