IF function help

[kilomanjaro4]

I am sorry if my title is vague. If anyone can help me not be vague that would be great. Anyway my function is
this: =IF(M13="","",K13/M13)
The cell that has this function in it is a percentage of K13/M13. I just want to fully understand this as I will be repeating this myself soon. So my question is why does it say M13="","",
That part confuses me. If anyone can tell me hat it means that would be great. I have also seen where a function says ie (J5"") This doesnt make snese to me either. Why is there one empty bracket and in my funstion there are two? I am not allowed to give a copy of the workbook as it is confidential. Sorrry.

[wfm007]

Dear,

It means in case if cell M13 is blank then leave it as a blank else run the formula K13/M13.

[Pete_UK]

Further to this, the formula K13/M13 will result in an error (#DIV!0) if M13 is zero or blank, so your formula just anticipates this and will return a blank ("") instead.

Hope this helps.

Pete

[kilomanjaro4]

Thanks for the help.

[kilomanjaro4]

Where do I change this post to say solved now?

nvm I figured it out.

[Tony Valko]

=IF(M13="","",K13/M13)

In plain English...

If cell M13 is equal to a blank/empty cell then return a blank (""), otherwise return the value of cell K13 divided by the value of cell M13.