# The Excel function: ISTEXT

## Description

Each of these functions, referred to collectively as the **IS** functions, checks the specified value and returns TRUE or FALSE depending on the outcome. For example, the **ISBLANK** function returns the logical value TRUE if the value argument is a reference to an empty cell; otherwise it returns FALSE.

You can use an **IS** function to get information about a value before performing a calculation or other action with it. For example, you can use the **ISERROR** function in conjunction with the **IF** function to perform a different action if an error occurs:

**=IF(ISERROR(A1), "An error occurred.", A1 * 2)**

This formula checks to see if an error condition exists in A1. If so, the **IF** function returns the message "An error occurred." If no error exists, the **IF** function performs the calculation A1*2.