How to use the ISBLANK function in Excel

In this article, we will learn How to use the ISBLANK function in Excel.

What is the ISBLANK function ?

The ISBLANK function is a logical operator to check if the cell is empty or not. If a cell has a formula, text, number percentage, date or currency then the ISBLANK function returns FALSE indicating that the cell is not blank. If and only if the cell has no value then only formula returns FALSE indicating that the cell has no value at all.

ISBLANK Function in Excel

ISBLANK function returns TRUE or FALSE having cell reference as input.


=ISBLANK (cell_ref)

Cell_ref : cell reference of cell to check e.g. B3

Example :

All of these might be confusing to understand. Let's understand how to use the function using an example. Here We have some Values to test the function, except in the A5 cell. A5 cell has a formula that returns empty text.

Use the Formula


It returns False as there is text in the A2 cell.

Applying the formula in other cells using Ctrl + D shortcut key.

You must be wondering why didn’t the function returns False. As A5 cell has a formula making it non blank.

USE of ISBLANK function along with other function like IF function

The use of ISBLANK function is generally used with other functions to check the cell and return corresponding results.

Let’s understand with an example here. Here we have some values on list 1 and we only want the formula to return the same value if not blank and empty value if blank.




ISBLANK : function checks the cell D5.

"" :  returns an empty string blank cell instead of Zero.

IF function performs a logic_test if the test is true, it returns an empty string else returns the same value.

The resulting output will be like

As you can see the formula returns the same value or blank cell based on the logic_test.

Hope this article about How to use the ISBLANK function in Excel is explanatory. Find more articles on calculating values and related Excel formulas here. If you liked our blogs, share it with your friends on Facebook. And also you can follow us on Twitter and Facebook. We would love to hear from you, do let us know how we can improve, complement or innovate our work and make it better for you. Write to us at

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