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The millimeter (symbol = mm), or millimetre (British spelling) is a unit of length in the metric system, equal to one thousandth of a meter, which is the SI base unit ..more definition+
The astronomical unit (symbol au, or ua) is a unit of length, roughly the distance from Earth to the Sun. However, that distance varies as Earth orbits the Sun, f ..more definition+
In relation to the base unit of [length] => (meters), 1 Millimeters (mm) is equal to 0.001 meters, while 1 Astronomical Unit (au) = 149597870700 meters.| 2100 Millimeters | to common length units |
|---|---|
| 2100 mm | = 2.1 meters (m) |
| 2100 mm | = 0.0021 kilometers (km) |
| 2100 mm | = 210 centimeters (cm) |
| 2100 mm | = 6.8897637795276 feet (ft) |
| 2100 mm | = 82.677165354331 inches (in) |
| 2100 mm | = 2.2965879265092 yards (yd) |
| 2100 mm | = 0.0013048795036984 miles (mi) |
| 2100 mm | = 2.2196385160131E-16 light years (ly) |
| 2100 mm | = 7937.0088739539 pixels (PX) |
| 2100 mm | = 1.3125E+35 planck length (pl) |