In this article, we will discuss how we can identify unique numbers in Microsoft Excel using formulas.

There can be various scenarios. However, we will cover the common problems that users usually face in their daily work.

The problems can be of following types:

- There can be negative numbers or positive numbers in the range.

Answer should be count of unique values in Excel.

- There can be negative numbers, positive numbers & errors like
**#REF!, #VALUE!, #DIV/0!,****#NAME?**in the range.

Answer should be count of unique identification number by ignoring / skipping any error type.

- There can be negative numbers, positive numbers & errors like
**#REF!, #VALUE!, #DIV/0!,****#NAME?**in the range.

Answer should be count of unique positive numbers, ignoring any error type.

**Example 1**

Count of unique numbers from negative & positive numbers.

Following is the snapshot of data we have wherein number 2 is repeated twice & we want formula to count number 2 as one:

- The formula in cell C4 is
**=SUM(IF(FREQUENCY(IF(A1:A5>0,A1:A5),IF(A1:A5>0,A1:A5))>0,1))**

**Example 2**

Count of unique numbers from negative, positive numbers & errors i.e. **#REF!, #VALUE!, #DIV/0!, ****#NAME? **in the range.

- The formula in cell D4 is
**{=SUM(IF(1-ISERROR($A$1:$A$10),IF($A$1:$A$10<>””,1))/COUNTIF($A$1:$A$10,$A$1:$A$10&””))}**

**Note: **This is an array formula. **CTRL + SHIFT + ENTER** keys need to be pressed together.

The same result can be achieved by applying a combination of **SUM, IF, ISNUMBER, FREQUENCY**.

- The formula in cell E4 is
**{=SUM(IF(FREQUENCY(IF(ISNUMBER(A1:A10),A1:A10),A1:A10),1))}**

**Note:** This is an array formula. Use **CTRL+ SHIFT + ENTER** keys together to get result.

**Example3**

Count of unique positive numbers after ignoring any error type in the range.

- The formula in cell F4 is
**{=SUM(IF(1-ISERROR($A$1:$A$10),IF($A$1:$A$10>0,1))/COUNTIF($A$1:$A$10,$A$1:$A$10&””))}**

**Note:** This is an array formula. Use **CTRL+ SHIFT + ENTER** keys together to get result.

In this way, we can get the Excel count of unique numbers after meeting various conditions.