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Hello ExcelSuperXW,
Thanks for contacting us, I understand that you want to know how to switch between manual and automatic calculation in Excel, and how to trigger the calculation only when a cell value is changed.
There are different ways to switch between manual and automatic calculation in Excel, depending on the version and interface of the program. Here are some common methods:
-You can click the File tab, then Options, then Formulas, then select the calculation mode that you want to use under Calculation options. -You can click the Formulas tab, then Calculation Options, then select the calculation mode that you want to use from the drop-down menu. -You can use keyboard shortcuts to access the Excel Options dialog box and select the calculation mode. For example, you can press Alt-F, then T, then A for automatic, D for automatic except for data tables, or M for manual. -To trigger the calculation only when a cell value is changed, you can use the F9 key to manually recalculate the workbook or the active worksheet1. You can also use the Shift-F9 key to recalculate only the active worksheet, or the Ctrl-Alt-F9 key to recalculate all open workbooks.
However, if you want to automate the calculation process, you can also use a macro or a VBA code to run the calculation whenever a cell value is changed. For example, you can use the Worksheet_Change event to trigger the calculation when a cell in a specific range is changed.
I hope this answers your question. Do you have any other questions?
Kind Regards, Yusuf.