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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 Zeptometers (zm) is equal to 1.0E-21 meters, while 1 Light Seconds (ls) = 299800000 meters.| 1217085816 Zeptometers | to common length units |
|---|---|
| 1217085816 zm | = 1.217085816E-12 meters (m) |
| 1217085816 zm | = 1.217085816E-15 kilometers (km) |
| 1217085816 zm | = 1.217085816E-10 centimeters (cm) |
| 1217085816 zm | = 3.9930637007874E-12 feet (ft) |
| 1217085816 zm | = 4.7916764409449E-11 inches (in) |
| 1217085816 zm | = 1.3310212335958E-12 yards (yd) |
| 1217085816 zm | = 7.5626206454307E-16 miles (mi) |
| 1217085816 zm | = 1.2864240735652E-28 light years (ly) |
| 1217085816 zm | = 4.6000099628359E-9 pixels (PX) |
| 1217085816 zm | = 7.60678635E+22 planck length (pl) |