Okay so I did notice this and decided to bring it to the forums to get the proper answer. In h1z1 kotk I took my sens. 0.19 and I divided it by two in my calculator. I got 0.095 So I tried it again on the website calculator and got what's in the image.. which one is correct splitting that sens in half? 

A lot of games sensitivity do not scale linearly with DPI/distance, i.e. doubling the DPI and halving sensitivity does not work. This is true for games that have 0 as a valid sensitivity value, since you obviously can't divide or multiply by 0 to get a new sensitivity