Calculating an ideal surplus for muscle gains

ForecasterJason

I came across this article with calculators for how much muscle can be gained on a bulk based on body size, body fat, and training experience. What do you all think? It seems to me that there was some solid basis for these calculations, although of course this assumes other factors like stress and sleep are in good shape.
https://bodylogiq.org/en/the-ideal-body-fat-percentage-to-bulk/

dhimaan

It's pretty damn close to my own calculations and other online calculators I have used.

kristafrancis55

https://www.bodybuilding.com/fun/macronutcal.htm