The femtometer conversion selector above selects the length/distance measurement unit to convert to starting from femtometers (fm). To make a conversion starting from a unit of length other than femtometer, simply click on the "Reset" button.
The femtometer is a unit of length in the metric system equal to 10-15 meters (1 fm = 10-15 m), the base unit of length in the International System of Units (SI).
One femtometer (fm) is also equal to 10-6 nanometers (nm), or 10-9 micrometers (μm), or 10-12 millimeters (mm) or 10-13 centimeters (cm), which are SI units of length.
The femtometer is also called fermi, named after the Italian physicist Enrico Fermi (1901 - 1954) who is well known for his seminal work in atomic and nuclear physics.
The femtometer is used in nuclear physics.
Also known as: femtometre (plural: femtometres, Int. spelling), or fermi