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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.| 7121918432 Femtometers | to common length units |
|---|---|
| 7121918432 fm | = 7.121918432E-6 meters (m) |
| 7121918432 fm | = 7.121918432E-9 kilometers (km) |
| 7121918432 fm | = 0.0007121918432 centimeters (cm) |
| 7121918432 fm | = 2.3365874120735E-5 feet (ft) |
| 7121918432 fm | = 0.00028039048944882 inches (in) |
| 7121918432 fm | = 7.7886247069116E-6 yards (yd) |
| 7121918432 fm | = 4.4253549471089E-9 miles (mi) |
| 7121918432 fm | = 7.5276592664623E-22 light years (ly) |
| 7121918432 fm | = 0.026917490378267 pixels (PX) |
| 7121918432 fm | = 4.45119902E+29 planck length (pl) |