Km to centimeters formula

A kilometer (km) is a unit of length within the International System of Units (SI), which is a decimal multiple of the meter. The kilometer, a common measure of distances equals to 1000 meters, and equivalent to 3280.8 feet or 0.621 mile. Abbreviation: km

Here are more examples of things that measure about one kilometer (order of magnitude):

The length of a standard Olympic running track
The distance between two subway stations in some cities
The distance of a short car trip within a city
The distance from the base to the peak of a mountain
The distance between two landmarks in a city
The length of some organized road races
The distance of a typical cycling sprint race
The distance covered by an average person during a 10-15 minute walk.

A centimeter (cm) is a decimal fraction of the meter, the International System of Units (SI) unit of length, approximately equivalent to 0.39 inches. The centimeter (cm) is a unit of length that was previously the base unit of length in the centimeter-gram-second (CGS) system of units. Although SI prefixes for factors of 10³ are preferred by technicians, the centimeter remains a practical unit of length for everyday measurements. An average adult person's fingernail width is approximately equal to one centimeter, making it useful for measuring small objects or distances. Learn more about the centimeter and its uses in everyday life.

Here are some examples of things that measure about one centimeter (order of magnitude):

The width of a fingernail of an adult human
The diameter of a standard pencil lead
The thickness of a credit card
The height of a small Lego brick
The diameter of an AA battery
The length of an ant
The width of a small button
The thickness of a smartphone screen protector
The width of a grain of rice
The height of a small paperclip.