Convert cm to m

厘米

定义
A centimeter (cm) is an SI unit of length equal to one-hundredth of a meter (0.01 m). It provides a handy subdivision of the meter for measurements too small to use full meters.

历史与起源
Built from the Latin prefix 厘 (“hundred”) plus “meter,” the centimeter became part of the metric system’s decimal structure in the late 18th century. While the meter itself has evolved—from Earth-based definitions to a light-speed constant—one centimeter has always remained 1⁄100 of that unit.

现代使用
Centimeters are used worldwide for everyday tasks and scientific work: measuring height charts, classroom rulers, product dimensions, and small distances wherever the metric system is adopted.

仪表

定义
A meter (m) is the SI’s base unit of length, defined as the distance light travels in 1⁄299 792 458 of a second. This constant-based definition, established in 1983 and refined in 2019, ensures unchanging precision.

历史与起源

• 1793: Conceptualized as one ten-millionth of the Earth’s quadrant from Equator to North Pole

• 1889: Realized by an international platinum-iridium prototype bar

• 1960: Recast in terms of krypton-86 emission wavelengths

• 1983-2019: 与光速直接相关

现代使用
Meters dominate global measurements—in science, engineering, construction, and everyday distances. Though the U.S. often uses feet and miles in daily life, meters underpin its scientific and trade standards.

Centimeter → Meter Conversion Table

如何转换

• 1 cm = 0.01 m

• 1 m = 100 cm

示例
Convert 15 cm to meters: