Convert km to cm

公里

定义
A kilometer (symbol: km) is an SI unit of length equal to 1 000 meters. In everyday terms, one kilometer is about 0.6214 statute miles.

起源
前缀 千克 (希腊文 khilioi, “thousand”) denotes a factor of 10³. As the metric system evolved, the kilometer naturally emerged as the 1 000× multiple of the meter—which today is defined by the distance light travels in a vacuum in 1⁄299 792 458 of a second. While the meter’s realization has shifted over centuries, the fixed ratio (1 km = 1 000 m) remains constant.

现代使用
Kilometers are the global standard for expressing land distances—on highway signs, in road maps, and in pedestrian wayfinding. Though the U.S. and a few others still use miles on road markers, most of the world measures travel, shipping routes, and race lengths in kilometers.

厘米

定义
A centimeter (symbol: cm) is an SI unit of length equal to one-hundredth of a meter (0.01 m). It provides a finer subdivision of the meter for smaller-scale measurements.

起源
Named by combining the prefix 厘 （拉丁语 分, “hundred”) with “meter,” the centimeter fits into the metric system’s decimal architecture. Despite the meter’s own changing definition—from Earth-meridian fractions to a prototype bar to a light-speed constant—the centimeter remains exactly 0.01 m.

现代使用
Centimeters are ubiquitous wherever meters are too coarse: measuring personal height in medical charts, sizing small objects, crafting school rulers, and detailing product dimensions around the globe.

Kilometer → Centimeter Conversion Table

如何转换

• 1 km = 100 000 cm

• 1 cm = 0.00001 km

示例

To change 15 km into centimeters:

15 km × 100 000 cm/km = 1 500 000 cm