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## Why Do Companies Use Serial Numbers?

## What’s a Serial Number

## How Serial Numbers Are Created

## Typical Uses of Serial Numbers

## Internal Use of Serial Numbers

## Tips for Finding Serial Numbers

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## How to Assign a Serial Number to Duplicate or Unique Values in Excel?

## Assigning a Serial Number to Duplicate Values in Excel

Let us assume we have an Excel sheet where the data is similar to the data shown in the below image.

We have assigned one to the first value. Now to fill the serial drag down using the autofill handle.

## Assign a Serial Number to Unique Values in Excel

Let us consider the same data that we used in the above example.

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## How to assign serial number to duplicate or unique values in Excel?

## Assign serial number to duplicate values with Formula

Assign serial number to unique value with formula.

To order the duplicate values, please apply the following formula:

To assign serial number to unique value, the below formula may do you a favor:

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## Assign sequential numbers to unique values in a list

## Rate This Thread

Hi, Please can you help me assign a sequential number to each new value in an unsorted list, and where duplicates occur, assign the same number as the duplicate E.g. A 1 B 2 C 3 D 4 A 1 C 3 E 5 Thank you

## Re: Assign sequential numbers to unique values in a list

Assuming your data starts in A2, (leaving a row above), then in B2 enter: =IF(COUNTIF(A$2:A2,A2)=1,MAX(B$1:B1)+1,VLOOKUP(A2,A$1:B1,2,0)) copied down.

Where there is a will there are many ways. If you are happy with the results, please add to the contributor's reputation by clicking the reputation icon (star icon) below left corner Please also mark the thread as Solved once it is solved. Check the FAQ's to see how.

What about assigning unique values with multiple criteria, for instance: aa 1 ab 2 aa 1 ba 1 bb 2 bc 3 ca 1 ca 1 cb 2 cc 3 I am assigning unique values for each of the subsets (first letter is a, b, c). I am able to separate out the two parts in the first column like this: a a 1 a b 2 a a 1 b a 1 b b 2 b c 3 c a 1 c a 1 c b 2 c c 3

I found the answer to my question. I was able to do it with the array formula as follows: {=IF(COUNTIFS(A2:A$2,A2,B2:B$2,B2)>1,VLOOKUP(C2,C1:D$1,2,0),MAX(IF(A1:A$1=A2,D1:D$1)+1))} Where column A is the first set, column B is a set within each subset in column A, column C is column A values concatenated with column B, and column D is the unique value within each subset of column A generated by the array formula. Remember to copy the array formula without the brackets around it and commit the array formula to the cell with CTRL+Shift+Enter. a a aa 1 a b ab 2 a a aa 1 b a ba 1 b b bb 2 b c bc 3 c a ca 1 c a ca 1 c b cb 2 c c cc 3 c b cb 2 a c ac 3 a b ab 2 a a aa 1 a a aa 1 a b ab 2 a a aa 1 b a ba 1 b b bb 2 b c bc 3 c a ca 1 c a ca 1 c b cb 2 c c cc 3 c b cb 2 a c ac 3 a b ab 2 a a aa 1

I want to achieve a similar objective, but when I insert the formula, it will not insert a number to a respective duplicate value. After inserting the formula =if(COUNTIF(H$2:H2,H2)=1,MAX(I$1:I1)+1,VLOOKUP(H2,H$1:I1,0,FALSE)) It returns: H ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I Heat# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (Blank) HT 414... Unique~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 HT D07... Unique~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2 HT C21... Unique~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 3 HT 414... Duplicate of first Unique Value~~~~~~~~~~~~~~~~ (Blank) HT 234... Unique~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4 My question is how do I get the duplicates to show the value given to the original unique value so that, in this example, the second and subsequent HT 414... will show 1 and so on for all possible duplicates. For instance, if HT C21 reappears, the adjacent cell will return "3" Thank you in advance.

jmshanahan welcome to the forum Unfortunately your post does not comply with Rule 2 of our Forum RULES . Do not post a question in the thread of another member -- start your own thread. If you feel an existing thread is particularly relevant to your need, provide a link to the other thread in your new thread. Old threads are often only monitored by the original participants. New threads not only open you up to all possible participants again, they typically get faster response, too.

1. Use code tags for VBA. [code] Your Code [/code] (or use the # button) 2. If your question is resolved, mark it SOLVED using the thread tools 3. Click on the star if you think someone helped you Regards Ford

My apologies, I made a new thread.

Thank you this thread has proven to be useful. How can the formula that was provided to the OP be modified to ignore '0' as a unique entry? =IF(COUNTIF(A$2:A2,A2)=1,MAX(B$1:B1)+1,VLOOKUP(A2,A$1:B1,2,0)) A 1 B 2 C 3 D 4 A 1 C 3 E 5 0 Blank/Nil 0 Blank/Nil 0 Blank/Nil 0 Blank/Nil (or just resolve to 0) The reason I am asking is because my field is populated from another sheet using the =INDIRECT("Sheet!A1") which resolves 0 until the referenced cell is populated. I know it's one question per thread but I think this is related closely enough?

Cottonbaler welcome to the forum Perhaps you missed my post #6 a little above your post? Unfortunately your post does not comply with Rule 2 of our Forum RULES . Do not post a question in the thread of another member -- start your own thread. If you feel an existing thread is particularly relevant to your need, provide a link to the other thread in your new thread. Old threads are often only monitored by the original participants. New threads not only open you up to all possible participants again, they typically get faster response, too.

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## Avoid Duplication in Serial Numbers in Excel

And here are the two ways that I could come up with to avoid duplication in serial numbers in Excel.

## Method #1 – Using VLOOKUP Function

The first way is to use our beloved VLOOKUP function .

To do this, we first need to get a unique list of countries. Here are the steps to do that:

In the cell, where you want the serial numbers (B3:B15), use the below VLOOKUP formula:

## Method #2 – A Dynamic Formula

While the VLOOKUP method is a perfectly fine way of doing this, it is not dynamic.

Here is a formula that makes it dynamic:

=IF( COUNTIF ($C$3:$C4,$C4)=1, MAX ($B$3:$B3)+1, INDEX ($B$3:$C$ 18, MATCH ($C4,$C$3:$C4,0),1))

=INDEX($B$3:$C$18,MATCH($C4,$C$ 3:$C4,0),1)

You May Also Like the Following Excel Tutorials:

- How to Use Flash Fill in Excel.
- Automatically Sort Data in Alphabetical Order using Formula .
- How to Quickly Fill Numbers in Cells without Dragging .
- How to use Fill Handle in Excel .

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2 thoughts on “avoid duplication in serial numbers in excel”.

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## How to assign serial number to duplicate or unique values in Excel?

Assign serial number to duplicate values with formula.

To order the duplicate values, please apply the following formula:

## Assign serial number to unique value with Formula

To assign serial number to unique value, the below formula may do you a favor:

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## How to Assign Serial Number to Unique Values with Condition in Excel

## Excel Facts

Candyman8019, well-known member.

Candyman8019 said: What is the desired format of your unique serial number? Assuming if column A, B and D are duplicated then the serial number will also be duplicated? Click to expand...

The above is assuming the list is sorted by column A, then Column B.

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## Excel assign sequence number to duplicate records

Excel check duplicate values using Conditional Formatting

Excel delete duplicated data in consecutive rows

Let’s say we have the below transaction dates. Note that Jan 1st is repeated at the bottom.

In Cell B2, type formula =COUNTIF($A$2:A2,A2)

Autofill down the column, then you will get a sequence number for each transaction.

## Assign sequence number to duplicate records – Excel VBA

Press ALT+F11, copy and paste the below code in a new Module.

Run the Macro to get the same result without seeing the formula.

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## How to Automatically Add Serial Numbers in Excel

Because with a serial number you can have a unique identity to each entry of your data.

## 14 Ways to Insert Serial Number Column in Excel

## Row Numbers as Serial Numbers

By default, in a spreadsheet, you have row numbers which act as a serial number for the data.

Otherwise, follow ahead mention methods to create a separate column of serial numbers.

## Use Fill Handle to Add Serial Numbers

To simply add serial numbers using fill handle you can use the following steps.

- Enter 1 in a cell and 2 in the next cell downward.
- Select both the cells and drag down with fill handle (a small dark box at the right bottom of your selection) up to the cell where you want the last serial number.
- Once you get serial numbers up to you want, just release your mouse from the selection.

## Method #3 (Fastest)

Fill series to automatically add serial numbers.

- Select the cell from where you want to start your serial numbers and insert “1” in it.
- Now, go to home tab ➜ editing ➜ fill ➜ series.
- Series In = Column.
- Step Value = 1
- Stop Value = 10000 or whatever you want up to.

## Use ROW Function to Drag Serial Numbers

ROW is an effective way to insert serial numbers in your worksheet.

- Go to cell A1, edit it and enter the =ROW() formula in it.
- Now drag the formula to down , up to the serial number you want.

It has a benefit over other methods that it works even when you sort your data.

## Method #5 (My Favorite ?)

Generate serial numbers by adding one in the previous number.

This is my favorite method and believes me, it's lightning fast.

- Enter 1 in the cell from where you want to start your serial numbers.
- In next down cell, enter formula =G1+1 (G1 is the starting cell here).
- Drag this formula to down, up to the serial numbers you want.

Quick Note: It will create an incremental number by adding 1 to the previous number.

## Get Serial Numbers with COUNTA Function

Quick Note: This also a dynamic method to add serial numbers.

The benefit of this method is, it will return blank if you have any blank row in your data.

## Add Roman Numbers as Serial Numbers

And, if you want to add roman numbers as serial numbers. You can use the roman function with ROW.

## Method #8 (VBA Code)

Add serial numbers with a vba code.

This macro code can be useful if you want to create a series of numbers without using formulas.

i = InputBox("Enter Value", "Enter Serial Numbers")

ActiveCell.Offset(1, 0).Activate

Check this out: Top 100 Useful Excel Macro [VBA] Codes Examples

If you want to add every serial number twice, then you can use below code for that.

## Dynamic Serial Numbers for Filters

But, if you use a dynamic method to insert serial numbers then you can get double benefits.

First , whenever you filter data it’ll show you serial number according to the filtered item.

For this, you can use SUBTOTAL function and the formula will be like below.

## Serial Numbers in a Table

In the below table when you enter a new entry in a new serial number automatically generates.

## Incremental Serial Number by Multiplying

## Method #12 (For Pivot Table Lovers)

Serial numbers in a pivot table.

To add serial numbers to a pivot table you need to add an extra column in the source data.

For this, please follow the below steps:

- First of all, add a new column in your source data with 1 in each cell.
- Next, create a pivot table with that data.
- After that, add that column as values.
- Now, right click on that column on values section and open “Value Field Settings”.
- From here go to “Show Values As” tab and select running total in and then click OK.

Now you have a new column in your pivot table with staring from one to the maximum row .

Quick Note: This is a dynamic column and when you filter pivot numbers will change automatically.

## Add a Serial Dates in a Column

As you know Excel stores dates as numbers and every date has a unique number.

So, when you add “1” in a date it will return the next date in the result.

The second method is quite simple.

Just like serial numbers, you will get a sequence of dates in the column.

## Convert Serial Numbers to Serial Dates

Please note, with this method, you are using the serial number as a day and then you create a date.

Let’s say you have serial numbers starting from A1, then in cell B1, add below formula.

After that, drag-down it up to the last serial number cell and you’ll get a sequence of dates.

I hope you found this useful, but now, tell me one thing.

Which method do you prefer to insert serial numbers?

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## 59 thoughts on “How to Automatically Add Serial Numbers in Excel”

There is no formula in Method 10

Thank you so much! Your fave is so efficient and I used that.

I feel like I must be missing something here… thanks

I have tried in MS Excel 2007, but it is not working

can you plese give the formula/code for method #10

2.now need data update from textboxes value To sheet specific range based on textbox search Value

HOW TO PUT NEXT SERIAL NUMBER WHEN DATA REPETITION ENDS FILTERED TABLE COLUMN, FOR EXAMPLE BELOW

I find the links to your 14 methods to be inactive..?

However, I hope you can help me;

Thus, the serial number “marries” the record and move along with it when I run a sort.

this can be done with VBA and Excel Table

Voucher Sr, Catagory, Date, 1 X 1-Jan-2020 2 X 1-Jan-2020 3 (2) X (Z) 1-Jan-2020 4 (1) Z 1-Dec-2020

Thank you in advance Best Regards.

It would be great if you share a snapshot with me -> puneet(at)excelchamps(dot)com

I’m searching this question’s answer from a long days back..

THANK YOU VERY MUCH, I WOULD HAVE RENUMBER 1K CONTENTS.

5 HS Code 24021000 24021000 24021000

Thanks a lot for your explanations! it really helped me..I personally like method 3 and 5.

What formula will be use for this type of numbring

S.N. QUALITY 1 2/60 ERI 1 10 S SLUB COTT 1 25S ACRLYIC

2 2/60 ERI 2 2/20 COT 2 10 COTTON 2 2/40 COTTON

3 2/60 ERI 3 2/20 COT 3 10 COTTON 3 2/40 COTTON

4 2/20 COTTON 4 2/60 ERI 4 25 S ACRLYIC

did you get an answer in regards to this?

I am not clear with your Method #10. can you explain clearly?

How to add Serial no. having figure more than 15 digits, like 89080068770002819

Give me a better example. what do you mean by 15 digits? 🙂

what the formula for method 10

DID YOU GOT IT ? I AM SEARCHING FOR THE SAME

i want to get a series like 1,1,2,2,3,3,4,4,5,5,.. and so on. How to do that?

i = InputBox(“Enter Value”, “Enter Serial Numbers”)

Please help To get serial chace

hii i want to make auto fill column like 3 9 27 81

Multiply with three and drag down.

I often use COUNTA(A$1:A1) to add serial number.for filering i’d love SUBTOTAL(3,B$1:B1)

Well, this is my favorite as it works with filtering: =subtotal(3,a$1:a1)

formula should be =SUBTOTAL(3,B$1:B1)

## IMAGES

## VIDEO

## COMMENTS

To find the value of a piano with a serial number, use the number to determine the approximate date the piano was made. Match the serial number to a manufacturer using a list of numbers and brands, such as the one available on UKPianos.co.u...

Many products you have in your home have unique serial numbers printed on them. Companies assign serial numbers to their products. If you ever have to contact a company regarding a product, one of the first things you’ll need to do is provi...

Researching the artist and the artwork online, in auction house catalogs and through online auction sites is the most direct way to determine value, as is getting an appraisal of the piece.

To assign serial numbers to unique values, click on an empty cell, in our case cell B2, and enter the formula =IF(COUNTIF(A$2:A2,A2)=1,MAX(B$1:

Notes: 1. In the above formula, A2 is the cell contain the value you want to assign

The video offers a short tutorial on how to assign serial numbers to unique values in Excel.

The video offers a short tutorial on how to assign serial numbers to duplicate values in Excel.

Unregistered Fast answers need clear examples. Post a small Excel sheet (not a picture) showing realistic & representative sample data WITHOUT

Method #1 – Using VLOOKUP Function · Select the copied data and go to Data –> Remove Duplicates. It will open the remove duplicate dialogue box. · Make sure that

arrow blue right bubble Assign serial number to unique value with Formula ... Notes: 1. In the above formula, A2 is the cell contain the value you

Column D is just a reference of what I should get with a formula and it is not part of the criteria. For example for the ACNE~ISOTRETINOIN

Mar 30, 2021 - How to assign serial number to duplicate or unique values in Excel?

While it is good enough to follow the above non-VBA solution, you can also go for a Macro solution

14 Ways to Insert Serial Number Column in Excel · Row Numbers as Serial Numbers · Use Fill Handle to Add Serial Numbers · Fill Series To Automatically Add Serial