## Validate duplicates

*Article last updated on August 13, 2018*

### Validate "All duplicate values" list (D2:D7)

Array formula in E13:

### Validate "Values having duplicates" list (F3:F4)

Array formula in E17:

**Named ranges**

all_duplicates (D3:D7)

Duplicates (F3:F4)

list (B3:B9)

What is named ranges?

### How to implement array formula to your workbook

Change the named ranges.

### Download excel file for this tutorial.

Validate duplicates.xls

(Excel 97-2003 Workbook *.xls)

### Functions in this article:

**COUNTIF(**range,criteria**)**

Counts the number of cells within a range that meet the given condition

**AND(**logical1, logical2**)**

Checks whether all arguments are TRUE, and returns TRUE if all arguments are TRUE

Extract a list of duplicates from a column

The array formula in cell C2 extracts duplicate values from column A. Only one duplicate of each value is displayed […]

Extract a list of duplicates from three columns combined using array formula in excel

Question: I have three ranges or lists and I need to extract duplicates from those ranges combined using excel array […]

Filter unique distinct and duplicate values from a large data set in excel 2007

In this post I am going to describe how to filter duplicate and unique distinct values from a really large […]

Find min and max unique and duplicate numerical values

Question: How do I get the largest and smallest unique and duplicate value? The image below shows you a list […]

How to extract a list of duplicates from a column in excel

Edit: A better shorter easier array formula in this post. Here is a solution (Column C) to extract duplicates from […]

Extract duplicate values with exceptions

The formula in cell E2 returns duplicate values from column A but values in column C are excluded from the […]

Remove duplicates on same date in excel

Question: Column A1 Has dates Column B as data A1 : 1/1/2010 : 5000 A2 : 2/1/2010 : 4000 A3 […]

Filter duplicate words from a cell range [UDF]

AJ Serrano asks: I have a column where each rows contains different values and I wanted to obtain the duplicate […]

Remove duplicates from a large dataset [UDF]

Aamer asks: I have a sheet with 3000 rows of invoice dates that are out of order. There could be […]

Filter duplicates from two columns combined and sort from A to Z using array formula in excel

This blog post describes how to extract duplicates sorted from A to Z from two different columns combined. Array formula […]

### Leave a Reply

### How to comment

**How to add a formula to your comment**

<code>Insert your formula here.</code>

**Convert less than and larger than signs**

Use html character entities instead of less than and larger than signs.

< becomes < and > becomes >

**How to add VBA code to your comment**

[vb 1="vbnet" language=","]

Put your VBA code here.

[/vb]

**How to add a picture to your comment:**

Upload picture to postimage.org or imgur

Use the img tag, like this: <img src="Insert pic link here">

**Contact Oscar**

You can contact me through this contact form