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The kilometer (SI symbol: km) or kilometre (British spelling) is a unit of length in the metric system, equal to 1000 meters (kilo- being the SI prefix for 1000). It is ..more definition+
In relation to the base unit of [length] => (meters), 1 Femtometers (fm) is equal to 1.0E-15 meters, while 1 Kilometers (km) = 1000 meters.1 Femtometers | to common length units |
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1 fm | = 1.0E-15 meters (m) |
1 fm | = 1.0E-18 kilometers (km) |
1 fm | = 1.0E-13 centimeters (cm) |
1 fm | = 3.2808398950131E-15 feet (ft) |
1 fm | = 3.9370078740157E-14 inches (in) |
1 fm | = 1.0936132983377E-15 yards (yd) |
1 fm | = 6.2137119223733E-19 miles (mi) |
1 fm | = 1.056970721911E-31 light years (ly) |
1 fm | = 3.7795280352161E-12 pixels (PX) |
1 fm | = 6.25E+19 planck length (pl) |