in episode 145 of Boruto Sarada is trying to help Boruto escape from prison but instead she finds the warden Benga. who, after discovering her plan, unleahes a massive fireball jutsu that knocks her out, this will be a calc meant to determine both Benga's AP & Sarada's DB. Feat can be seen here.
So Sarada stands at 1.47 meters tall and in the shot she is 95px
Length of crater is 861px or 13.3228421052 meters
Width of Crater is 400px or 6.1894736842 meters
Height of crater is 430px or 6.6536842106 meters
Total area destroyed is 548.6719861416m^3 or 548,671,986.14160001cc
For a low end I will use Pulverization, as I feel that makes the most sense, there is no visible fragments so using fragmentation seems a bit baseless. Pulv. is 214.35j/cc
Total yield for the low end is 117,607,840,229 joules, or 28.1 Tons of TNT, pretty consistent actually.
For the high end I'll use vaporization, again, nothing is shown in the aftermath except smoke, and given the fact it is a fire based attack, vaporization feels like a safe high end
Total for high end yield is 14,100,870,000,000 or 3,370 tons of TNT
Results[]
Low-End: 28.1 tons of TNT, City Block Level
High-End: 3.37 Kilotons, Small Town Level
Either end works for me, though the low end seems more logical, as it is more consistent & the pulverization value was also used for Sarada's fireball calc.
Revision[]
So it was pointed out that the attack only destroyed the floor they were on. So the height will change, it will be 1/3rd the original height. However the length and width will be the same since the floors are shown to be destroyed in the same manner.
So the width is the same, meaning the Radius is 2.0631578947m I'll use the volume of a cylinder for this since I feel that is more accurate Using the same height as before we get a volume of 88.97684m^3, or 88,976,840cc Using pulverization we get 19072185654 joules or 4.55 Tons of TNT Large Building level :/