We can **Count Cells that Contain Errors **in a range with a formula that combines the **SUMPRODUCT** and **ISERROR functions**. The steps below will walk through the process.

*Figure 1: How to Count Cells that Contain Errors*

**General Formula:**

**=SUMPRODUCT(ISERROR(range)*1)**

**Formula**

**=SUMPRODUCT(ISERROR(B4:B11)*1)**

**Setting up the Data**

- We will set up the data by inputting the
**DATA**into**Column B** **Cell C4 in Column C**is where we want the formula to return the result for the number of cells with errors

*Figure 2: Setting up the Data*

**Count Cells that Contain Errors **

- We will click on
**Cell C4** - We will insert the formula below into the cell

**=SUMPRODUCT(ISERROR(B4:B11)*1)** - We will
**press the enter key**

*Figure 3: Count of Errors in Range B4:B11*

**Explanation**

The **ISERROR function **checks the range if they contain errors. The result is returned as an array of **TRUE** or **FALSE**.

**{FALSE;FALSE;TRUE;TRUE;FALSE;FALSE;TRUE,FALSE}**

**TRUE** represents the cells with errors and is converted to **1** so that the array looks like this:

**{0;0;1;1;0;0;1,0}**

The result of this array is then **multiplied by 1** and the result is **summed** and returned as the result by the **SUMPRODUCT Function.**

**Note**

We can use the **SUM function** instead of **SUMPRODUCT function**. However, we need to enter as an array formula using **CTRL + SHIFT + ENTER**. The formula is:

`=SUM(ISERROR(range)*1)`

**I****SERROR** **function** counts all errors. If you use **ISERR function**, it will exclude **#N/A**

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