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LeoCalculator 4.1

An calculator for performing evaluation of mathematical expressions that could include not only basic operations but also elementary and statistical functions and brackets.
Edit box 'Expression' has to contain a string of mathematical expression that is supposed to be calculated.

It Can Contain:

numbers in with or without decimal point and with or without a power of 10 like 1.2e-2 or 3.E3;
pi in this application is equal to 3.141592653;
basic mathematical operations +,-,*,/;
power of grade operation ^ used like 2^3 = 8;
brackets determining order of operation execution;
elementary mathematical functions: sin,cos,tan, asin, acos, atan, ln ,log10, exp ,pow10, abs, sqrt; basic statistical functions as sum, mean, sigma (standard deviation) student and trust for calculation probability and trust interval. Arguments of the functions have to be an expression surrounded brackets;
Variables can be declared and edited separately from formula and can be any combinations of letters and numbers without spaces and reserved words: value expressions as usual are numbers but in most cases it could be mathematical expressions too.

User's rating:

  • Currently 2.43/5
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(1.89MB, Extension: ZIP)

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History updates (Complete changelogs since the listing on this site)

4.1 [07-06-18]

Small bags are fixed.

Other versions : 3.5 2.5 2.3

v3.5 [01-15-11]


v2.5 [02-01-08]


v2.3 [02-21-07]


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Predicted future versions and notices:

The constantly monitors the update of all programs, including information from the LeoCalculator 4.1 changelog file, however sometimes it can happen that data are not complete or are outdated.We assume that author continue's to develop 4.2 version with further advanced features, and soon you will be informed. Equally important 5.0 upgrades of the program we will continue to monitor. Full LeoCalculator description has been compared with the overall software database and our algorithm has found the following applications (are showed below).