This post will guide you how to convert a column letter to a column number using an excel formula. And how to write a user defined function to convert column letter to number in excel VBA.
Table of Contents
Convert column letter to number using excel Formula
Firstly, you need to construct a text string of cell reference, such as: B1, then you can use INDIRECT function to transform this text string to a normal cell reference, next, using the COLUMN function to get the column number. So you can write down the following formula:
Let’s see how this formula works:
This formula will join a column number with “1” to construct as a new text string contains column letter. The returned value goes into the INDIRECT function as its argument.
The INDIRECT function returns a valid cell reference from a text string returned by the above formula. Then the returned result is passed into the COLUMN function.
This formula returns the column number for a cell reference that returned by the INDIRECT function. So it returns number 1.
Convert column number to letter with VBA user defined function
You can also create a new user defined function to convert column number to a column letter in Excel VBA:
1# click on “Visual Basic” command under DEVELOPER Tab.
2# then the “Visual Basic Editor” window will appear.
3# click “Insert” ->”Module” to create a new module named
4# paste the below VBA code into the code window. Then clicking “Save” button.
Public Function ConLetterToNum(ColN) ConLetterToNum = Range(ColN & 1).Column End Function
5# back to the current worksheet, then enter the below formula in Cell C1:
= ConLetterToNum (B1)
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