Gyutaro's explosion from the Demon Slayer anime, I have three separate ways to calculate this feat, taking it as an explosion, fragmenting concrete or soil, and destroying the houses
Explosion Method[]
The explosion diameter is 1278 px and the house is 14 px
The lowest capped height of Taisho houses are 10 meters
1278 / 14 = 91.2857142857
Explosion diameter = 91.2857142857 x 10 = 912.857142857 meters (456.428571428 meters in radius)
Using ground-formula explosion:
456.428571428^3 * ((27136 * 1.37895 + 8649)^(1/2) / 13568 - 93 / 13568)^2 = 7641.946 tons of tnt or 7.641 kilotons of tnt, 7-C (Town level)
Soil or Concrete Method[]
Using the radius as the previous calculation
Surface course of concrete is 0.1524 meters
This explosion seems cylindrical, so using the cylinder formula
pi x 456.428571428^2 x 0.1524 = 99742.554 m^3 or 99742554028 cm^3
Concrete fragmentation = 17-20 j/cc
Soil pulverization = 0.4-1 j/cc
Concrete Version
99742554028 x 17 = 405.263 tons of tnt, 8-A (Multi-City Block level)
99742554028 x 20 = 476.780 tons of tnt, 8-A (Multi-City Block level)
Soil Version
99742554028 x 0.4 = 39897021611.2 Joules or 9.535 tons of tnt, High 8-C (Large Building level) 🗿
99742554028 x 1 = 99742554028 Joules, 23.839 tons of tnt, 8-B (City Block level)
House method[]
Using the same radius, house height, and cylinder formula
pi x 456.428571428^2 x 10 = 6544787.00971
Using 80% hollowness
6544787.00971 x .20 = 1308957.40194 m^3
1308957.40194 m^3 = 1308957401940 cm^3
Violent fragmentation of wood = 13.7895 j/cc
1308957401940 x 13.7895 = 1.8049868e+13 Joules or 4.314 kilotons of tnt, Low 7-C (Small Town level+)