I don't understand, in the calculator it's telling me for example 10 sensitivity at 800 dpi is 17.3cm/360 and with widowmaker ADS at 50 with also 10 sensitivity and 800dpi it says it's 34.6cm/360 and in order to get 17.3cm/360 you'd need 100 widowmaker ADS, FOV doesn't have an impact on it.
This is all very confusing. Even after reading through every page it's just weird, but I'm going to try going with the 56 that the osu! conversion gave me based on my resolutions, screen size, and fov. But making sense of this is complicated as hell.