1] Add days directly If the expiry period is defined in days, you can calculate the expiry date by simply adding the number of days to the starting date using the + operator.

We show you how to use Excel to count days between two dates using the DAYS, DATEDIF, NETWORKDAYS, and TODAY functions, and Subtraction.

How to Calculate Multiple Cells in Excel. Microsoft Excel is a spreadsheet program used to store and analyze data. While Excel is able to hold both text and numerical data, most of the pre ...

One of the many features of Excel is being nosy. That's right, you can quickly calculate a persons age as long as you have their birth date.

Use Excel's Paste Special feature to calculate multiple values against a data range, at the same time. You can make the process even more efficient with keyboard shortcut combinations.

How to Calculate Average on Excel From Multiple Sheets. Microsoft Excel 2010 provides a formula for calculating the average value from multiple worksheets in a workbook.