Written by Allen Wyatt (last updated May 15, 2024)
This tip applies to Excel 2007, 2010, 2013, 2016, 2019, and 2021
When you change a value in any cell of a worksheet, Excel automatically recalculates all the other formulas within the worksheet. This means that Excel is always up to date, based on any changes you may have performed.
If you have an absolutely huge worksheet or a terribly slow computer (or both), then doing a calculation after every change can get very tedious. In these situations, you can actually spend more time waiting on Excel to finish calculating than you do on entering information.
The answer to this problem is to configure Excel so that all calculations are done manually. This is easy to do by following these steps:
Now Excel does not calculate your worksheet automatically. Instead, you must press F9 whenever you want to update the results displayed within your worksheet. (Pressing F9 updates the entire workbook. If you want to update only the active worksheet, you can press Shift+F9.)
You can also change the calculation setting in this manner:
Figure 1. The Formulas area of the Excel Options dialog box.
ExcelTips is your source for cost-effective Microsoft Excel training. This tip (9999) applies to Microsoft Excel 2007, 2010, 2013, 2016, 2019, and 2021. You can find a version of this tip for the older menu interface of Excel here: Understanding Manual Calculation.
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