How many km is 15 AU?
15 AU = 2,243,968,061 km
It is 2,243,968,061 km, so saying 2,243,968,061 km is fine — rounding is within 0.5%.
And how many AU is 15 km?
15 km = 0 AU
Formula: km = AU × 149,597,870.7
AU to km around this value
6 AU897,587,224km
7 AU1,047,185,095km
8 AU1,196,782,966km
9 AU1,346,380,836km
10 AU1,495,978,707km
11 AU1,645,576,578km
12 AU1,795,174,448km
13 AU1,944,772,319km
14 AU2,094,370,190km
15 AU2,243,968,061km
16 AU2,393,565,931km
17 AU2,543,163,802km
18 AU2,692,761,673km
19 AU2,842,359,543km
20 AU2,991,957,414km
21 AU3,141,555,285km
22 AU3,291,153,155km
23 AU3,440,751,026km
24 AU3,590,348,897km
25 AU3,739,946,767km