Formulas are powerful tools for performing calculations and analyzing data in Excel. In this beginner’s guide, you’ll learn how to use formulas and explore some popular built-in functions.

Excel makes it easy to find how many days there are between two dates. With a little more effort, you can find the number of days in which people will be actually working.

How to use a DAYS function in Excel In this tutorial, we will find the number of days between the dates in the month. Click the cell where you want to see the result, then type =DAYS (A3, B3).

Thankfully, Microsoft Excel's COUNTIF formula swoops in to save the day. It lets you count cells based on specific text or conditions, turning your spreadsheet chaos into organized data magic.

Subtracting isn’t as straightforward in Excel as it seems, simply because there’s no actual command to subtract numbers. Instead, you have to use a formula with the subtraction operator.

Excel's NETWORKDAYS function (available in Excel 2010 and later editions) returns the number of working days in a specified period of time.

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