Master the LEN Formula in Excel | Simple Yet Powerful Function You Must Know Description: Learn one of the most important and easy Excel formulas: LEN Function. In this short tutorial, you’ll understand how to use the LEN formula to count the number of characters in any cell. This function is simple but plays a key role in data cleaning, validation, and text analysis. Use it to: • Count letters, numbers, and spaces in text. • Check data length for consistency. • Build stronger formulas using LEN