How many km is 40 AU?
40 AU = 5,983,914,828 km
It is 5,983,914,828 km, so saying 5,983,914,828 km is fine — rounding is within 0.5%.
And how many AU is 40 km?
40 km = 0 AU
Formula: km = AU × 149,597,870.7
AU to km around this value
22 AU3,291,153,155km
24 AU3,590,348,897km
26 AU3,889,544,638km
28 AU4,188,740,380km
30 AU4,487,936,121km
32 AU4,787,131,862km
34 AU5,086,327,604km
36 AU5,385,523,345km
38 AU5,684,719,087km
40 AU5,983,914,828km
42 AU6,283,110,569km
44 AU6,582,306,311km
46 AU6,881,502,052km
48 AU7,180,697,794km
50 AU7,479,893,535km
52 AU7,779,089,276km
54 AU8,078,285,018km
56 AU8,377,480,759km
58 AU8,676,676,501km
60 AU8,975,872,242km