Counting in excel

[joshnvince]

Please help i have a spreadsheet that I need to count employees worked in a month.;

Ex John Smith Showed up 5 times in my spreadsheet but he technically worked 2 days. I have attached a spreadsheet to clearly explain things. Thank you

[benishiryo]

hi there. try this array formula:
=SUM(IF(FREQUENCY(IF($B$2:$B$14="John Smith",$A$2:$A$14),$A$2:$A$14)>0,1))
...confirmed by pressing CTRL+SHIFT+ENTER to activate the array, not just ENTER. You will know the array is active when you see curly braces { } appear around your formula. If you do not CTRL+SHIFT+ENTER you will get an error or a clearly incorrect answer.

you may refer the red portion to a cell containing "John Smith" too.