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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 Petameters (Pm) is equal to 1000000000000000 meters, while 1 Kilometers (km) = 1000 meters.| 291000 Petameters | to common length units |
|---|---|
| 291000 Pm | = 2.91E+20 meters (m) |
| 291000 Pm | = 2.91E+17 kilometers (km) |
| 291000 Pm | = 2.91E+22 centimeters (cm) |
| 291000 Pm | = 9.5472440944882E+20 feet (ft) |
| 291000 Pm | = 1.1456692913386E+22 inches (in) |
| 291000 Pm | = 3.1824146981627E+20 yards (yd) |
| 291000 Pm | = 1.8081901694106E+17 miles (mi) |
| 291000 Pm | = 30757.84800761 light years (ly) |
| 291000 Pm | = 1.0998426582479E+24 pixels (PX) |
| 291000 Pm | = 1.81875E+55 planck length (pl) |