How many GJ is 120 t TNT?
120 t TNT = 502.08 GJ
It is 502.08 GJ, so saying 502 GJ is fine — rounding is within 0.5%.
And how many t TNT is 120 GJ?
120 GJ = 28.681 t TNT
Formula: GJ = t TNT × 4.184
t TNT to GJ around this value
30 t TNT125.52GJ
40 t TNT167.36GJ
50 t TNT209.2GJ
60 t TNT251.04GJ
70 t TNT292.88GJ
80 t TNT334.72GJ
90 t TNT376.56GJ
100 t TNT418.4GJ
110 t TNT460.24GJ
120 t TNT502.08GJ
130 t TNT543.92GJ
140 t TNT585.76GJ
150 t TNT627.6GJ
160 t TNT669.44GJ
170 t TNT711.28GJ
180 t TNT753.12GJ
190 t TNT794.96GJ
200 t TNT836.8GJ
210 t TNT878.64GJ
220 t TNT920.48GJ