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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.| 42150 Femtometers | to common length units |
|---|---|
| 42150 fm | = 4.215E-11 meters (m) |
| 42150 fm | = 4.215E-14 kilometers (km) |
| 42150 fm | = 4.215E-9 centimeters (cm) |
| 42150 fm | = 1.382874015748E-10 feet (ft) |
| 42150 fm | = 1.6594488188976E-9 inches (in) |
| 42150 fm | = 4.6095800524934E-11 yards (yd) |
| 42150 fm | = 2.6190795752804E-14 miles (mi) |
| 42150 fm | = 4.4551315928549E-27 light years (ly) |
| 42150 fm | = 1.5930710668436E-7 pixels (PX) |
| 42150 fm | = 2.634375E+24 planck length (pl) |