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A light-year (abbreviation: ly), sometimes referred to incorrectly as a light year, is a unit of length used informally to express astronomical distances. It is approxi ..more definition+
In relation to the base unit of [length] => (meters), 1 Femtometers (fm) is equal to 1.0E-15 meters, while 1 Light Years (ly) = 9461000000000000 meters.| 21850 Femtometers | to common length units |
|---|---|
| 21850 fm | = 2.185E-11 meters (m) |
| 21850 fm | = 2.185E-14 kilometers (km) |
| 21850 fm | = 2.185E-9 centimeters (cm) |
| 21850 fm | = 7.1686351706037E-11 feet (ft) |
| 21850 fm | = 8.6023622047244E-10 inches (in) |
| 21850 fm | = 2.3895450568679E-11 yards (yd) |
| 21850 fm | = 1.3576960550386E-14 miles (mi) |
| 21850 fm | = 2.3094810273755E-27 light years (ly) |
| 21850 fm | = 8.2582687569472E-8 pixels (PX) |
| 21850 fm | = 1.365625E+24 planck length (pl) |