As you can see in the screenshot below, I have one column that is recording a daily count, while the second column is a sum of this count over an entire campaign.

How can I get the second column to auto-fill so that it sums from cell O3 down to the correct point - for instance cell P5 should be =sum(O3:O5), cell P6 should be =sum(O3:O6), etc.

enter image description here


Place the following formula in P3:


By locking the starting row of the range with $, We achieve the intended result.

  • There's a reason for the minimum character limit. Please add some additional explanation.
    – jonsca
    Aug 1 '18 at 22:51
  • cell P3: =O3
  • cell P4: =IF(O4<>"";SUM(O4+P3);)
  • select cell P4 and drag the blue square down to the end

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