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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+
A foot (plural: feet, abbreviation: ft, symbol:(′) the prime symbol) is a unit of length in the imperial and US customary systems of measurement. Since 1959, both units have ..more definition+
In relation to the base unit of [length] => (meters), 1 Kilometers (km) is equal to 1000 meters, while 1 Feet (ft) = 0.3048 meters.721000000000 Kilometers | to common length units |
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721000000000 km | = 721000000000000 meters (m) |
721000000000 km | = 721000000000 kilometers (km) |
721000000000 km | = 7.21E+16 centimeters (cm) |
721000000000 km | = 2.3654855643045E+15 feet (ft) |
721000000000 km | = 2.8385826771654E+16 inches (in) |
721000000000 km | = 7.8849518810149E+14 yards (yd) |
721000000000 km | = 448008629603.12 miles (mi) |
721000000000 km | = 0.076207589049783 light years (ly) |
721000000000 km | = 2.7250397133908E+18 pixels (PX) |
721000000000 km | = 4.50625E+49 planck length (pl) |