Unlock the full potential of Excel's SUM function with advanced techniques for data analysis, conditional counting, and more.

Select the cell in your Microsoft Excel document that you would like to use for the sum of squares function and open the "Formulas" tab.

You can sum a series of numbers in Microsoft Excel manually by typing in a simple formula, or automatically with a tool.

In Excel spreadsheets, complex formulas are difficult to enter without making mistakes. Microsoft Excel’s LAMBDA() function can make such errors easier to find.