1 km2 =
1549996899.984 square inch (US survey)
2 km2 =
3099993799.968 square inch (US survey)
3 km2 =
4649990699.952 square inch (US survey)
4 km2 =
6199987599.936 square inch (US survey)
5 km2 =
7749984499.92 square inch (US survey)
6 km2 =
9299981399.904 square inch (US survey)
7 km2 =
10849978299.888 square inch (US survey)
8 km2 =
12399975199.872 square inch (US survey)
9 km2 =
13949972099.856 square inch (US survey)
10 km2 =
15499968999.84 square inch (US survey)
11 km2 =
17049965899.824 square inch (US survey)
12 km2 =
18599962799.808 square inch (US survey)
13 km2 =
20149959699.792 square inch (US survey)
14 km2 =
21699956599.776 square inch (US survey)
15 km2 =
23249953499.76 square inch (US survey)
16 km2 =
24799950399.744 square inch (US survey)
17 km2 =
26349947299.728 square inch (US survey)
18 km2 =
27899944199.712 square inch (US survey)
19 km2 =
29449941099.696 square inch (US survey)
20 km2 =
30999937999.68 square inch (US survey)
21 km2 =
32549934899.664 square inch (US survey)
22 km2 =
34099931799.648 square inch (US survey)
23 km2 =
35649928699.632 square inch (US survey)
24 km2 =
37199925599.616 square inch (US survey)
25 km2 =
38749922499.6 square inch (US survey)
26 km2 =
40299919399.584 square inch (US survey)
27 km2 =
41849916299.568 square inch (US survey)
28 km2 =
43399913199.552 square inch (US survey)
29 km2 =
44949910099.536 square inch (US survey)
30 km2 =
46499906999.52 square inch (US survey)
