Let's do strength calculation for Black Frieza.
In DBS chapter 27, Beerus was said to have been still fooling around with Perfect SSB Vegeta. Whis then hinted that Beerus would need to get serious in order to end the fight in an instant. When Vegeta landed a hit on Beerus, he got really mad and knocking him out with one attack. While Beerus was on the ground, he told Vegeta that in another universe he would have been a candidate for GoD. It should be noted that in the 11th Universe, Toppo is also a candidate and the second strongest after Jiren; jiren declining to be a GoD.
In DBS Chapter 29, Iwan described SSG Goku and Toppo's fighting skills to be at the level of the gods. In said chapter , we got to see how the GoD compared to one another, with Beerus being considered above average and being one of the few remaining GoD left standing. Toppo says at the end of the chapter that Jiren's power exceeds that of Belmond, the God of Universe 11. In DBS 41, Goku subconsciously masters UI and was able to beat Jiren in combat until he ran out of steam. The damage that Jiren received was so great that it reduce his powers to the point that a combine assault from weaker fighters was able to take him out.
After ToP, Goku went into the RoST to train with Meerus for 2 months. Meerus states that Goku is able to activate UI sign at will and he was able to put up a decent fight against Moro. Meerus intervenes and is able to completely overpower Meerus (trainee angel) but at the cost of being wiped out of existence, since he broke angel code. In DBS chapter 68, Whis says that the order of UI skill level goes as follow (Meerus-->Goku--->Whis+ other trained angels--->Grand Priest).
Granola makes a wish to become the strongest mortal at the cost of his life span decreasing. Granola was able to defeat UI Goku (mastered), who was stronger than Jiren> Belmond God of destruction. Granola was then usurped as strongest mortal after Elec wished Gas to be the strongest mortal. When it looked like Gas was going to finish everyone off, Frieza stepped in, having spent 10 years in the RoST. Frieza was not counted as a mortal warrior in Universe 7 due to being in another universe, which allowed him to be overpower Gas. After turning into his new Black Frieza form, he effortlessly one shotted Gas, who was still considered the strongest mortal. Frieza then killed Elec for betraying him and easily defeated UE Vegeta and ultra instinct Goku.
So Black Frieza >>> Gas> Granola> UE Vegeta>/~ Mastered UI Goku >Jiren> Bemond, GoD.
Where do you place Black Frieza's power in Super? Is he Beerus' equal now?