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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.| 648300 Femtometers | to common length units |
|---|---|
| 648300 fm | = 6.483E-10 meters (m) |
| 648300 fm | = 6.483E-13 kilometers (km) |
| 648300 fm | = 6.483E-8 centimeters (cm) |
| 648300 fm | = 2.126968503937E-9 feet (ft) |
| 648300 fm | = 2.5523622047244E-8 inches (in) |
| 648300 fm | = 7.0898950131234E-10 yards (yd) |
| 648300 fm | = 4.0283494392746E-13 miles (mi) |
| 648300 fm | = 6.852341190149E-26 light years (ly) |
| 648300 fm | = 2.4502680252306E-6 pixels (PX) |
| 648300 fm | = 4.051875E+25 planck length (pl) |