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The light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space ..more definition+
In relation to the base unit of [length] => (meters), 1 Femtometers (fm) is equal to 1.0E-15 meters, while 1 Light Seconds (ls) = 299800000 meters.| 418200 Femtometers | to common length units |
|---|---|
| 418200 fm | = 4.182E-10 meters (m) |
| 418200 fm | = 4.182E-13 kilometers (km) |
| 418200 fm | = 4.182E-8 centimeters (cm) |
| 418200 fm | = 1.3720472440945E-9 feet (ft) |
| 418200 fm | = 1.6464566929134E-8 inches (in) |
| 418200 fm | = 4.5734908136483E-10 yards (yd) |
| 418200 fm | = 2.5985743259365E-13 miles (mi) |
| 418200 fm | = 4.4202515590318E-26 light years (ly) |
| 418200 fm | = 1.5805986243274E-6 pixels (PX) |
| 418200 fm | = 2.61375E+25 planck length (pl) |