I have a small issue with Excel. I doing transformations for some columns in the dataset. I know the number of the columns I want, but I wasn't able to use them in a formula. For example I want to add the 5th and the 10th column. How do I write this formula?

Note: I have tried the R1C1 reference style but it is not what I am looking for.

  • You may have to write a custom function that works out column 1 = A, column 2 = B, column 27 = AA, column 28 = AB etc. Your function should take a number and return a letter(s)
    – Kinnectus
    May 22, 2014 at 11:53
  • wow that's sad! I am not an excel user! I think I will do this in some other software then! thank you very much :)
    – Error404
    May 22, 2014 at 11:54
  • Excel functions aren't too difficult to learn!
    – Kinnectus
    May 22, 2014 at 12:05
  • True, I am planning to learn them, but it is a matter of time for me now. Much appreciated :)
    – Error404
    May 22, 2014 at 12:07
  • What Excel version? I have an answer for 2010 (just tested and works a treat)
    – Kinnectus
    May 22, 2014 at 12:07

1 Answer 1


You can do this with:


Substitute 5 & 10 with calculations or cell references containing column numbers if needed.

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