How many km is 90 AU?
90 AU = 13,463,808,363 km
It is 13,463,808,363 km, so saying 13,463,808,363 km is fine — rounding is within 0.5%.
And how many AU is 90 km?
90 km = 0 AU
Formula: km = AU × 149,597,870.7
AU to km around this value
45 AU6,731,904,181km
50 AU7,479,893,535km
55 AU8,227,882,888km
60 AU8,975,872,242km
65 AU9,723,861,596km
70 AU10,471,850,949km
75 AU11,219,840,303km
80 AU11,967,829,656km
85 AU12,715,819,009km
90 AU13,463,808,363km
95 AU14,211,797,716km
100 AU14,959,787,070km
105 AU15,707,776,423km
110 AU16,455,765,777km
115 AU17,203,755,131km
120 AU17,951,744,484km
125 AU18,699,733,838km
130 AU19,447,723,191km
135 AU20,195,712,545km
140 AU20,943,701,898km