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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.| 123000 Femtometers | to common length units |
|---|---|
| 123000 fm | = 1.23E-10 meters (m) |
| 123000 fm | = 1.23E-13 kilometers (km) |
| 123000 fm | = 1.23E-8 centimeters (cm) |
| 123000 fm | = 4.0354330708661E-10 feet (ft) |
| 123000 fm | = 4.8425196850394E-9 inches (in) |
| 123000 fm | = 1.3451443569554E-10 yards (yd) |
| 123000 fm | = 7.6428656645192E-14 miles (mi) |
| 123000 fm | = 1.3000739879505E-26 light years (ly) |
| 123000 fm | = 4.6488194833158E-7 pixels (PX) |
| 123000 fm | = 7.6875E+24 planck length (pl) |