CalcPad X allows you to type in a mathematical expression, edit it for accuracy, format it for easy readability, then evaluate it with single mouse click or key press. And, because it takes full account of standard use of brackets (braces) and mathematical hierarchies (i.e. the orders of precedence of operators - multiplication before addition etc), you can type the expression exactly as it's written. True "wysiwyg" calculating! Each "Pad" (mathematical expression) can be saved for later use (e.g. for a commonly used conversion or formula). Use variables to easily evaluate the same expression with multiple values. Rename variables for clarity and readability. Many scientific and trigonometric functions are included and more will be available with future releases (requests accepted!). CalcPad X also solves quadratic equations and simultaneous linear equations.