You can use the Sum function in Microsoft Office Excel to sum columns of data, whether your data is in an Excel table or is simply a range in a column of your worksheet. The sum of a column of zeros ...

Enter a formula or use the AutoSum feature to total all values in a row in Excel. The AutoSum feature enables you to obtain a total for all values in a row or column at the click of a button. You can ...

I keep running into situations in Excel where I want to calculate a conditional sum, but my criterion is something along the lines of "Include cell B1 if cell A1 is a number, likewise B2 and A2, B3 ...