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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+
In relation to the base unit of [length] => (meters), 1 Femtometers (fm) is equal to 1.0E-15 meters, while 1 Blocks (bl) = 80.4672 meters.| 71 Femtometers | to common length units |
|---|---|
| 71 fm | = 7.1E-14 meters (m) |
| 71 fm | = 7.1E-17 kilometers (km) |
| 71 fm | = 7.1E-12 centimeters (cm) |
| 71 fm | = 2.3293963254593E-13 feet (ft) |
| 71 fm | = 2.7952755905512E-12 inches (in) |
| 71 fm | = 7.7646544181977E-14 yards (yd) |
| 71 fm | = 4.4117354648851E-17 miles (mi) |
| 71 fm | = 7.5044921255681E-30 light years (ly) |
| 71 fm | = 2.6834649050035E-10 pixels (PX) |
| 71 fm | = 4.4375E+21 planck length (pl) |