Given that there are 100 yards in a football field, and that 1 kilometer is 1093.6133 yards (Google calculator), then that would be reason to believe that 1 kilometer is 10.936133 football fields (1093.6133/100). However, if you are also taking into consideration the length of the field plus the length of the endzones, then 1 kilometer is 9.11344417 football fields (1093.6133/120).
96.78 football fields.
528 American football fields.
3 football fields
22.58 American football fields.
88 football fields
187,475.2 American football fields.
369,600 American football fields.
About 37,813 US NFL football fields.
25 football fields can fit inside the pentagon
15 miles = 264 American football fields.
About 105 (105.876124933827422) US NFL football fields.
24 whole fields (US, NFL) with some room left over.