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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+
In relation to the base unit of [length] => (meters), 1 Millimeters (mm) is equal to 0.001 meters, while 1 Perch (perch) = 5.0292 meters.| 18 Millimeters | to common length units |
|---|---|
| 18 mm | = 0.018 meters (m) |
| 18 mm | = 1.8E-5 kilometers (km) |
| 18 mm | = 1.8 centimeters (cm) |
| 18 mm | = 0.059055118110236 feet (ft) |
| 18 mm | = 0.70866141732283 inches (in) |
| 18 mm | = 0.019685039370079 yards (yd) |
| 18 mm | = 1.1184681460272E-5 miles (mi) |
| 18 mm | = 1.9025472994398E-18 light years (ly) |
| 18 mm | = 68.03150463389 pixels (PX) |
| 18 mm | = 1.125E+33 planck length (pl) |