Configure Goal Seek Precision in LibreOffice Calc

This guide explains how to configure goal-seeking and iterative calculation precision settings in LibreOffice Calc using the Options dialog. Adjusting these parameters allows you to control the numerical accuracy of the Goal Seek tool, manage convergence tolerances, and define the maximum number of iterations Calc performs when solving for target values.

Accessing the Calculation Options

To configure the precision and iteration settings that affect Goal Seek and recursive formulas, navigate through the main menu:

1. Open LibreOffice Calc.
2. Go to Tools > Options (or LibreOffice > Preferences on macOS).
3. In the left-hand pane, expand the LibreOffice Calc section.
4. Select Calculate.

Configurable Precision and Iteration Settings

Under the Iterative references and general calculation sections, you can adjust the following parameters:

• Iterations: Check this box to enable iterative calculations. When enabled, Calc performs repeated calculation cycles to approximate solutions for circular references and goal-seeking operations.
• Steps: Specifies the maximum number of iteration loops Calc is allowed to perform. If the calculation does not meet the convergence threshold within this number of steps, the process stops. Increasing this number allows Calc more attempts to find an exact solution for complex formulas.
• Minimum Change: Defines the precision tolerance threshold (epsilon). This is the minimum difference between two consecutive iteration results required for Calc to continue calculating. If the difference between iterations becomes smaller than this value, the goal is considered reached, and calculation stops. Decreasing this value (e.g., from 0.001 to 0.00001) yields higher accuracy at the expense of additional processing time.
• Precision as shown: Located under the general calculation options, checking this box forces Calc to perform calculations using the rounded numerical values displayed on screen rather than the full floating-point precision stored in memory. Leaving this unchecked provides maximum mathematical precision.
• Decimal places: Defines the default number of decimal places displayed for cells formatted with standard numerical formatting, indirectly affecting visual precision during manual verification.