Go here https://jscalc.io/calc/Q1gf45VCY4tmm2dq and click on the box that says
Option: Convert field of view to cl_fovScale
then leave the FOV type as default. Scroll down till you see "Field of view degrees" (which is where you are typing in your desired FOV. After doing so, the information you need is on the right. cl_fovScale. Use that value and place it into the mouse sensitivity website box FOV and then when you look at your actual result for HFOV and VFOV for apex, itll be closer to overwatch and the cm/360 will be different