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How to auto number a column in Excel?

Have you ever wanted to number a column in Excel? This tutorial will talk about some methods for numbering a column.

Auto number a column


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arrow blue right bubble Auto number a colunm


To auto number a column in Excel, you can use the below methods.

Method 1 Use formula =ROW()

If you want to number the column based on the row numbers, you can type this formula =ROW() into a cell and press Enter key then drag the autofill handle to the cells you need to number.

doc-number-column-1

Method 2 Use formula =OFFSET(A2,-1,0)+1

If you want to auto number the column cells not based on the row number, you can type this formula =OFFSET(A2,-1,0)+1 into Cell A2 which you want to begin the number series from 1, and press Enter key then drag the autofill handle to cells you need.

doc-number-column-2

Note:

1. With above formula to auto number a column, A2 is current cell's address, and the cell above this cell must be blank or 0. For example, if you want to enter this formula into Cell K5, the formula should be modified to =OFFSET(K5,-1,0)+1, and the Cell K4 must be blank or 0.

2. If you remove one number from the number series, the below numbers will be start from 1 again.

doc-number-column-3

Method 3 Use AutoFill function

In Excel, AutoFill function also can help you to number a column.

Type 1 into a cell that you want to start the numbering, then drag the autofill handle at the right-down corner of the cell to the cells you want to number, and click the fill options to expand the option, and check Fill Series, then the cells are numbered. See screenshot.

doc-number-column-4

Note: If you delete one number of the number series, the other numbers are kept.
doc-number-column-5


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  • To post as a guest, your comment is unpublished.
    Hans · 4 months ago
    I've deleted some rows in excel now my far left column numbering is eg 1,2,3,45,46,47 how do I get back to sequential numbering?
    • To post as a guest, your comment is unpublished.
      Sunny · 3 months ago
      If you have deleted rows, then you just need to renumber the sequential numbering, you can type the begining number 1 in first cell, then drag fill handle down to fill seriers.
  • To post as a guest, your comment is unpublished.
    Melvin Koshy · 1 years ago
    When I insert a row, the first column should have the sl.no above+1 and the rows below should be automatically numbered. This should happen without I needing to drag the formula
    What is the solution for such case?
    • To post as a guest, your comment is unpublished.
      Pkm · 10 months ago
      TRY THIS...


      I AM GIVING FORMULA STARTING FROM A2 AS I CONSIDER THAT A1 CONTAINS THE TITLE "S.NO."


      IN A2....... =IF(B2>0,1,"")

      IN A3........=IF(B3>0,MAX($A$2:A2)+1,"")


      THAN DRAG THE FORMULA FROM A3 TO DOWNSIDE. NOW THIS FORMULA WILL WORK WHEN YOU ENTER SOME TEXT IN B2,B3,.........,IT WILL ENTER SERIAL NO. AUTOMATICALLY.
    • To post as a guest, your comment is unpublished.
      Sunny · 1 years ago
      Sorry my hands are tied.
  • To post as a guest, your comment is unpublished.
    Salina · 1 years ago
    I want an auto-numbering that even if I delete a row in the middle, the numbers below will automatically adjust
  • To post as a guest, your comment is unpublished.
    JAMES · 1 years ago
    THIS INFO AIN'T MAKING ANY SENSE TO ME CAUSE IT'S QUITE DIFFERENT FROM WHAT I HAVE HERE, CAUSE THE CONTENT FOR KUTOOLS AIN'T ON MY EXCEL
    • To post as a guest, your comment is unpublished.
      Sunny · 1 years ago
      What is your question? All methods above for auto number a column do not need to apply Kutools for Excel.