How to identify missing numbers sequence in Excel?
Let's say you have a long list of sequence numbers to mark items, such as check numbers in bank statements, normally we scrolling through and locate the missing sequence numbers manually. Sometimes this is quite arduous and timeconsuming. You may think of tricky ways to deal with it. Yes, there are several easy ways to identify and locate missing numbers sequence in Excel 2007, Excel 2010, and Excel 2013 quickly and conveniently.
Identify missing numbers sequence with IF formula
Identify missing numbers sequence with an array formula
Identify missing numbers sequence with Kutools for Excel quickly
Insert unique sequence numbers to cells with Kutools for Excel
Find and highlight missing numbers from sequence:


Kutools for Excel’s Find Missing Sequence Number feature can helper you quickly and easily find the missing sequence, and insert the missing numbers or blank rows into the existing data sequence, or fill background color when encountering the missing sequence. Read more details about this feature...  
Identify missing numbers sequence with IF formula
As we all known, most of sequence numbers are with fixed increment of 1, such as 1, 2, 3, …, N. Therefore, if you can identify the number is not less 1 than its following number, there is a missing number.
We will show you the tutorials with an example as following screenshot shows:
1. In a blank cell, enter the formula of =IF(A2A1=1,"","Missing"), and press the Enter key. In this case, we enter the formula in Cell C1.
If there is no missing numbers, this formula will return nothing; if missing numbers exist, it will return the text of "Missing" in active cell.
2. Select the cell C1 and drag the fill handle over the range of cells that you want to contain this formula. Now it identifies the missing numbers with the text of "Missing" in corresponding cells of Column C. See the following screenshot:
Identify missing numbers sequence with an array formula
Sometimes it requires not only identifying missing numbers sequence, but also listing missing numbers too. You can deal it with following steps:
1. in the adjacent cell, please enter the formula = SMALL(IF(ISNA(MATCH(ROW(A$1:A$30),A$1:A$30,0)),ROW(A$1:A$30)),ROW(A1))
A1:A30 = range of numbers
The sequence to check against is 1 to 30
2. Press the Ctrl + Shift + Enter Keys together to finish the formula. Copy down the formula until you get #NUM! errors meaning all missing numbers have been listed. See screenshot:
Identify missing numbers sequence with Kutools for Excel quickly
The above methods only can identify the missing pure number sequence, if you have the sequence such as AA1001BB, AA1002BB, they may not work successfully. But, don't worry, Kutools for Excel’s powerful feature – Find Missing Sequence Number can help you quickly identify the missing sequence.
Kutools for Excel : with more than 120 handy Excel addins, free to try with no limitation in 60 days. 
After installing Kutools for Excel, please do as follows:（ Free Download Kutools for Excel Now ）
1. Select the data sequence that you want to find the missing sequence.
2. Click Kutools > Insert > Find Missing Sequence Number, see screenshot:
3. In the Find Missing Sequence Number dialog box, choose one option that you want to deal with the missing sequence number, this example, I will check Inserting new column with following missing marker. See screenshot:
4. Then click OK button, all the missing sequence numbers have been marked with Missing in a new column next to your data, see screenshot:
Note:
With this Find Missing Sequence Number utility, you can also finish the following operations:
Insert the missing sequence numbers into the exiting data;
Insert blank rows when encountering missing sequence number;
Shade the missing sequence number with background color.
Free Download Kutools for Excel Now
Insert unique sequence numbers to cells with Kutools for Excel
Sometimes, you may need to insert a list of unique continuous sequence numbers with specific prefix and suffix, such as KTE201500001Order, KTE201500002Order, KTE201500003Order…, how could you generate theses consecutive numbers quickly and easily in Excel workbook?
Kutools for Excel : with more than 120 handy Excel addins, free to try with no limitation in 60 days. 
After installing Kutools for Excel, please do as follows:（ Free Download Kutools for Excel Now ）
1. Select a list of cells that you want to insert the sequence numbers.
2. Click Kutools > Insert > Insert Sequence Number, see screenshot:
3. In the Insert Sequence Number dialog box, click New button to start create the sequence numbers, see screenshot:
4. Then the Insert Sequence Number dialog will be expanded, in the left bottom pane, create your own sequential numbers as you need. You should type the sequence name, start number, increment, number of digits, and then enter the prefix or suffix as you like. At the same time, you can preview the result of your customized sequence in the right bottom list box. See screenshot:
5. Then click Add button to add this customized sequence into above list box, select the item you are created, and click Fill Range button, see screenshot:
6. Now, the sequence numbers have been inserted the selected cells as following screenshot shown:
Notes:
1. You can generate other sequence numbers just by clicking New button to create a new one.
2. The unique sequence numbers can be insert into contiguous cells and noncontiguous ranges in different worksheets and workbooks followed by the previous inserted number.
Click to know more about this Insert Sequence Number feature.
Free Download Kutools for Excel Now
Recommended Productivity Tools
Office Tab
Bring handy tabs to Excel and other Office software, just like Chrome, Firefox and new Internet Explorer.
Kutools for Excel
Amazing! Increase your productivity in 5 minutes. Don't need any special skills, save two hours every day!
200 New Features for Excel, Make Excel Much Easy and Powerful:
 Merge Cell/Rows/Columns without Losing Data.
 Combine and Consolidate Multiple Sheets and Workbooks.
 Compare Ranges, Copy Multiple Ranges, Convert Text to Date, Unit and Currency Conversion.
 Count by Colors, Paging Subtotals, Advanced Sort and Super Filter,
 More Select/Insert/Delete/Text/Format/Link/Comment/Workbooks/Worksheets Tools...
Comments
Here you are finding missing numbers and pasting into other sheet...
But i need to findout missing rows insted of missing numbers...and i need it to paste that missing rows into a new sheet...
is there any solution for me.....
Thnaks
i need to find missimg number in total no of book.
i have 20000 book in my library . i have tally 18000 no of book .iam find the miss no's of books.
sir pleace help me.
iam uploading an excel file called abc into another excel called xyz....
That excel file abc rows directly writes into my Database...upto here i'm ok....
i need solution like this below....
no of rows read from abc excel while uploading into xyz excel...
no of rows inserted into database from abc excel...
if any rows while inserting into databse missing i need a message like "some rows were not inserted"
i need those missing rows into separate sheet
my code is in VBA,macros only...
2. The formula =SMALL is working for series starting from 1 and NOT for series starting from say 201 to 535. Then this formula is returning all missing nos. starting from 1 whereas ideally we want the missing nos. within the range from 201 to 535.
It is working fine sir,
I put this formula in excel VB module , later I saved as *.xla.
now pl help me, how to use it?
As I have no idea about how to create a VBA code, could you please let me know if there is any chance to adapt this code to my needs as follows:
1. the selected range to be by default (e.g. $C$2:$C$5000);
2. the new worksheet to have only the column with the missing numbers (and without "missing values" header);
3. to be able to add exceptions (e.g. numbers 4550432, 4552357, etc) that will not displayed in the new worksheet;
4. if some missing numbers are subsequently added in the original worksheet, these numbers to be automatically erased from the new worksheet, without running again the macro;
5. when I run again the macro, to create the same worksheet, with a particularly name.
Thank you so much in advance!
I used the =IF function and that works fine, but I'd be keen to get it working with the macros as well.
It is working and very useful this formula thank you
thanking you once again
I want to find out missing numbers starting from S1 to S30,000 and J1 to J7000, U1 to U26932 and C1 to C1836 please send code, Thanking You.
I want to find out missing numbers from S1 to S27000 and J1 to J7000 , U1 to U27000, C1 to C1848
I want to find out d missing numbers from S1 to S27000 and J1 to J6500. Please send me the vba code for d same
Thaniking you,
Jawale Jyo
I want to find out d missing numbers from S1 to S27000 and J1 to J6500. Please send me the vba code for d same.
The code available on net , when executed gives compilation error with WS.Sort
Thaniking you,
Jawale Jyo
/* getMissingNumbe r takes array and size of array as arguments*/
int getMissingNumbe r (int arr[], int num)
{
int i;
/* For xor of all the elemets in arary */
int x1 = a[0];
/* For xor of all the elemets from 1 to n+1 */
int x2 = 1;
for (i = 1; i< n; i++)
x1 = x1^a;
for ( i = 2; i
This example above is nothing short of a miracle similar to what a pace maker is to a heart patient. Cant express my thanks in words but you are a god saver
Any idea how to fix it ?
I wan to search missing numbers in a row of excel ,I tried to use the Kutool for excel ,After selecting the option to find missing numbers ,i am getting error the range can only contain number or text ?Though the range or row i had selected contains only number.
Any expert advice ?
Best,
Sanchit Bhrdwaj