There is no real 1:1 when it comes to ADS, you can only match one aspect of the sensitivity. This is explained in the instructions.
What conversion works best for you is down to personal preference, but the default setup of the calculator is a good place to start (360 distance for hipfire and MDV 0% for ADS and scopes).
So just enter your settings and try the suggested sensitivities: https://www.mouse-sensitivity.com/?share=111a7de17badd4255af8bbde493b15ae
If you find the ADS and scopes too slow, try to increase the percentage to 100%. If they are still too slow try MDH 100% instead. Or somewhere in between if you find 0% too slow and 100% too fast. Once you find you sweet spot you can use this for any game to get the exact same feel.
This is explained in the game notes: The shoulder aim can be calculated using either the hipfire or ADS setting, choose the one you prefer.