Block bad data, duplicates, and incorrect dates with these custom rules.

Excel has over 475 formulas in its Functions Library, from simple mathematics to very complex statistical, logical, and engineering tasks such as IF statements (one of our perennial favorite stories); ...

How to Use TODAY() to Highlight Fast-Approaching Dates in an Excel Sheet Your email has been sent Use Microsoft Excel's TODAY() function in simple expressions to highlight the current date and past ...

Q. When I paste a large amount of data into Excel containing dates as far back as the 1800s, the recent dates display correctly as valid dates, but the older dates automatically convert to text. I ...