Divide by Zero error

08/09/18 Edited 12/09/19



I have the following formula to calculate % Over/Under Budget:

=[$ (Over)/Under Budget]8 / [FOOD BUDGET July 2018]8

I would like this to work even when there is a 0 in the Budget number and even when "over/under" is 0.


Thank you for your help.



Divide by Zero.PNG


  • J. Craig WilliamsJ. Craig Williams Top Contributor

    Either account for 0

    =IF([FOOD BUDGET July 2018]@row = 0, 0, [$ (Over)/Under Budget]@row/ [FOOD BUDGET July 2018]@row)

    or catch the error

    =IFERROR([$ (Over)/Under Budget]@row/ [FOOD BUDGET July 2018]@row), 0)

    Both of these return 0 if there is a divide by 0.


  • Thanks Craig,

    IFERROR works good, now I think my issue has changed.

    Now I need to be able handle divide by zero error and if there is a value in "Total Spend..." column against the "Food Budget..." which could be 0.

    Added new screenshot to help show - "Waynesboro" line.  Need to be able to show a negative over/under budget even when budget is 0.

    Thanks again,




  • J. Craig WilliamsJ. Craig Williams Top Contributor

    How do you define a percentage when the budget value is 0?

    By "you", I mean you, specifically. Mathematically it has no meaning (is infinite). 

    What do you want to see as the result of 

    Budget =0

    Spend =445

    or Spend = 1 or 1000, as the answer is likely the same.

    Personally, I would not return a numerical value, but rather something like "Unexpected Expense!" and the have the RYGB ball be red.




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