Reor Calculator offers basic and scientific calculator functions, unit conversions, and programming capabilities, all available at no cost.
Reor Calculator is a free, open-source calculator application for Windows. Developed by a single programmer, it provides a variety of useful calculator functions beyond just basic arithmetic.
As a basic calculator, Reor can do addition, subtraction, multiplication, and division. It has dedicated keys for common mathematical functions like parentheses, percentage, square root, inverse, and more. For more advanced needs, it also includes a scientific calculator with trigonometric functions, logs, and exponentials.
One of the standout features of Reor Calculator is its extensive set of unit conversions. You can seamlessly convert between lengths, areas, speeds, temperatures, digital storage, and over a hundred other units. It also has programmable variables and basic programming functions like loops and conditional statements.
Customization is another strength of Reor Calculator. You can choose between several themes, rearrange the layout of keys, and set preferences for things like copy-paste behavior. Recently added graphing capabilities also allow you to visualize data and functions.
While the interface shows its age a bit, Reor Calculator still remains a capable, free alternative to commercial software like Microsoft Mathematics. If you need a programmable calculator and unit converter, it's definitely worth a try.
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