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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 Siriometer (sir) is equal to 1.496E+17 meters, while 1 Femtometers (fm) = 1.0E-15 meters.| 3121000000000 Siriometer | to common length units |
|---|---|
| 3121000000000 sir | = 4.669016E+29 meters (m) |
| 3121000000000 sir | = 4.669016E+26 kilometers (km) |
| 3121000000000 sir | = 4.669016E+31 centimeters (cm) |
| 3121000000000 sir | = 1.5318293963255E+30 feet (ft) |
| 3121000000000 sir | = 1.8381952755906E+31 inches (in) |
| 3121000000000 sir | = 5.1060979877515E+29 yards (yd) |
| 3121000000000 sir | = 2.9011920384952E+26 miles (mi) |
| 3121000000000 sir | = 49350132121340 light years (ly) |
| 3121000000000 sir | = 1.7646676868873E+33 pixels (PX) |
| 3121000000000 sir | = 2.918135E+64 planck length (pl) |