How many km is 120 AU?
120 AU = 17,951,744,484 km
It is 17,951,744,484 km, so saying 17,951,744,484 km is fine — rounding is within 0.5%.
And how many AU is 120 km?
120 km = 0 AU
Formula: km = AU × 149,597,870.7
AU to km around this value
30 AU4,487,936,121km
40 AU5,983,914,828km
50 AU7,479,893,535km
60 AU8,975,872,242km
70 AU10,471,850,949km
80 AU11,967,829,656km
90 AU13,463,808,363km
100 AU14,959,787,070km
110 AU16,455,765,777km
120 AU17,951,744,484km
130 AU19,447,723,191km
140 AU20,943,701,898km
150 AU22,439,680,605km
160 AU23,935,659,312km
170 AU25,431,638,019km
180 AU26,927,616,726km
190 AU28,423,595,433km
200 AU29,919,574,140km
210 AU31,415,552,847km
220 AU32,911,531,554km