I did a ks test on excel through a youtube video. 
<https://www.youtube.com/watch?v=cltWQsmBg0k>

In case I had done the excel wrongly I thought that I should check it with an online calculator of the ks test.
<https://www.socscistatistics.com/tests/kolmogorov/default.aspx>

From the values I inputted, the online calculator and the excel spreadsheet, differ the ks test statistic D, by 0.007. 

Is there a reason for this?