The ISFORMULA function is one of the information functions. It is used to check whether there is a reference to a cell that contains a formula. If the cell contains a formula, the function returns TRUE, otherwise the function returns FALSE.
Syntax
ISFORMULA(reference)
The ISFORMULA function has the following argument:
Argument
Description
reference
A reference to a cell that you want to test.
Notes
Please note that this is an array formula. To learn more, please read the Insert array formulas article.