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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 Femtometers (fm) is equal to 1.0E-15 meters, while 1 Siriometer (sir) = 1.496E+17 meters.| 818400 Femtometers | to common length units |
|---|---|
| 818400 fm | = 8.184E-10 meters (m) |
| 818400 fm | = 8.184E-13 kilometers (km) |
| 818400 fm | = 8.184E-8 centimeters (cm) |
| 818400 fm | = 2.6850393700787E-9 feet (ft) |
| 818400 fm | = 3.2220472440945E-8 inches (in) |
| 818400 fm | = 8.9501312335958E-10 yards (yd) |
| 818400 fm | = 5.0853018372703E-13 miles (mi) |
| 818400 fm | = 8.6502483881196E-26 light years (ly) |
| 818400 fm | = 3.0931657440209E-6 pixels (PX) |
| 818400 fm | = 5.115E+25 planck length (pl) |