1 km2 =
10763867.361 square foot (US survey)
2 km2 =
21527734.722 square foot (US survey)
3 km2 =
32291602.083 square foot (US survey)
4 km2 =
43055469.444 square foot (US survey)
5 km2 =
53819336.805 square foot (US survey)
6 km2 =
64583204.166 square foot (US survey)
7 km2 =
75347071.527 square foot (US survey)
8 km2 =
86110938.888 square foot (US survey)
9 km2 =
96874806.249 square foot (US survey)
10 km2 =
107638673.61 square foot (US survey)
11 km2 =
118402540.971 square foot (US survey)
12 km2 =
129166408.332 square foot (US survey)
13 km2 =
139930275.693 square foot (US survey)
14 km2 =
150694143.054 square foot (US survey)
15 km2 =
161458010.415 square foot (US survey)
16 km2 =
172221877.776 square foot (US survey)
17 km2 =
182985745.137 square foot (US survey)
18 km2 =
193749612.498 square foot (US survey)
19 km2 =
204513479.859 square foot (US survey)
20 km2 =
215277347.22 square foot (US survey)
21 km2 =
226041214.581 square foot (US survey)
22 km2 =
236805081.942 square foot (US survey)
23 km2 =
247568949.303 square foot (US survey)
24 km2 =
258332816.664 square foot (US survey)
25 km2 =
269096684.025 square foot (US survey)
26 km2 =
279860551.386 square foot (US survey)
27 km2 =
290624418.747 square foot (US survey)
28 km2 =
301388286.108 square foot (US survey)
29 km2 =
312152153.469 square foot (US survey)
30 km2 =
322916020.83 square foot (US survey)
