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Contents. Whenever you update a cell, Excel goes through a process to recalculate the workbook.
When working directly within Excel you want this to happen 99.9% of the time (the exception being if you are working with an extremely large workbook). However, this can really slow down your VBA code. It’s a good practice to set your calculations to manual at the begining of macros and restore calculations at the end of macros. If you need to recalculate the workbook you can manually tell Excel to calculate.
There are many reasons why you would want to turn of automatic calculation in Excel. One reason I often meet is when my spreadsheet uses randomly generated numbers or if I have huge spreadsheets which take some times every time it refreshes its calculations. To turn off go to 'File', then 'Options'. Select the 'Formulas' tab and under 'Calculation options' you will find three options:. Automatic. Automatic except for data tables. Manual Under manual you can select 'Recalculate workbook before saving'.
Use this if you want Excel to refresh all values before saving your workbook. When 'Manual' is selected you can refresh either with the 'F9' key or by clicking 'Calculate Now' under the 'Formulas' tab.
You are saying there was never a way to have Excel recalculate automatically on cells' changed values without user intervention? I did have it in Excel 2013 and it worked perfectly well. And yes, it did use up lots of resources but it did exist. Lots of things apparently changed in Excel 2016.