Convert femtometer to legua (Castile)
Selected category: length.
Definition and details for femtometer:
Femtometer (fm) is a metric unit of distance equal to one quadrillionth of a meter (10-15 m).
Definition and details for legua (Castile):
Legua is the Spanish league. One traditional legua is equal to 5000 varas. Using the traditional Spanish definition, it would be 4179.5 meters.