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A city block is between 1⁄20 and 1⁄8 mi (80 and 200 m). In Manhattan, the measurement "block" usually refers to a north–south block, which is 1⁄20 miles or 80 meters. Someti ..more definition+
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 Blocks (bl) is equal to 80.4672 meters, while 1 Light Seconds (ls) = 299800000 meters.| 4900 Blocks | to common length units |
|---|---|
| 4900 bl | = 394289.28 meters (m) |
| 4900 bl | = 394.28928 kilometers (km) |
| 4900 bl | = 39428928 centimeters (cm) |
| 4900 bl | = 1293600 feet (ft) |
| 4900 bl | = 15523200 inches (in) |
| 4900 bl | = 431200 yards (yd) |
| 4900 bl | = 245 miles (mi) |
| 4900 bl | = 4.1675222492337E-11 light years (ly) |
| 4900 bl | = 1490227387.7452 pixels (PX) |
| 4900 bl | = 2.464308E+40 planck length (pl) |