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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 Zeptometers (zm) is equal to 1.0E-21 meters, while 1 Light Years (ly) = 9461000000000000 meters.| 198000 Zeptometers | to common length units |
|---|---|
| 198000 zm | = 1.98E-16 meters (m) |
| 198000 zm | = 1.98E-19 kilometers (km) |
| 198000 zm | = 1.98E-14 centimeters (cm) |
| 198000 zm | = 6.496062992126E-16 feet (ft) |
| 198000 zm | = 7.7952755905512E-15 inches (in) |
| 198000 zm | = 2.1653543307087E-16 yards (yd) |
| 198000 zm | = 1.2303149606299E-19 miles (mi) |
| 198000 zm | = 2.0928020293838E-32 light years (ly) |
| 198000 zm | = 7.4834655097279E-13 pixels (PX) |
| 198000 zm | = 1.2375E+19 planck length (pl) |