Using Constants

FormulaCalculator includes system constants such as e and pi, and lets you define additional constants in Preferences. A constant can be used in both the quick calculator and calculation sheets, but it cannot be reassigned by a sheet formula.

Defining a constant

1. Open Preferences.

2. Open the Constants section.

3. Select an existing category or add one with the + button.

4. Add a constant with the + button below the constants list.

5. Enter its identifier, description, and numeric value, then save.

Press the + button below the constant list to add an entry. Its identifier must begin with a letter, contain no spaces, and be unique. CamelCase names such as earthGravity are recommended because underscores are rendered as mathematical subscripts.

The description is displayed when the constant is selected. It may contain normal explanatory text.

Store enough decimal places for the calculations that will use the constant. Display rounding does not reduce the stored value.

Using a constant

In the quick calculator, choose Converters and constants from the function-library popup. Select the category and constant, then insert it into the formula.

In a calculation sheet, type the constant's identifier directly. The calculated pane shows its numeric value.

Below the formula line, a Where... line shows the constant's name and value. This lets you copy the formula together with the values used.

If a constant is not recognized, verify its spelling and identifier in Preferences.