Subtraction is the easiest way to count days between two dates in Excel. You can use the arithmetic operator – (minus sign) to subtract one date from another to find the number of days between them.

How to reference cells with the COUNTIF function in Excel Your email has been sent Use COUNTIF to count values in a range that meet a certain condition and return a specified number to the cell.

How to use the UNIQUE() function to return a count of unique values in Excel Your email has been sent The TechRepublic article How to create a sorted unique list in an Excel spreadsheet shows you how ...