Convert femtometer to foot (French metric)
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 foot (French metric):
In 1799 meter became the official unit of length in France. So French metric foot, or "pied metrique" was defined as one third of a metre and it was in use until 1837.