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A fathom is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 meters), used especially for measuring the depth of water.
There a ..more definition+
The siriometer is a rarely used and an obsolete astronomical unit of length, defined to be equal to about one million astronomical units (au). One siriometer is approxim ..more definition+
In relation to the base unit of [length] => (meters), 1 Fathoms (fath) is equal to 1.8288 meters, while 1 Siriometer (sir) = 1.496E+17 meters.| 21000 Fathoms | to common length units |
|---|---|
| 21000 fath | = 38404.8 meters (m) |
| 21000 fath | = 38.4048 kilometers (km) |
| 21000 fath | = 3840480 centimeters (cm) |
| 21000 fath | = 126000 feet (ft) |
| 21000 fath | = 1512000 inches (in) |
| 21000 fath | = 42000 yards (yd) |
| 21000 fath | = 23.863636363636 miles (mi) |
| 21000 fath | = 4.0592749180848E-12 light years (ly) |
| 21000 fath | = 145152018.28687 pixels (PX) |
| 21000 fath | = 2.4003E+39 planck length (pl) |