Convert 138 cm to km

To convert 138 centimeters (cm) to kilometers (km), you need to understand the relationship between these two units of measurement. This guide will walk you through the definitions and conversion process.

cm Definition

Centimeter (cm) is a metric unit of length equal to one-hundredth of a meter. It is commonly used to measure shorter distances, such as height, width, and small objects. For example, a typical ruler may have measurements in centimeters.

km Definition

Kilometer (km) is a metric unit of length equal to one thousand meters. It is widely used to measure longer distances, such as the distance between cities or the length of a road. For instance, road signs often indicate distances in kilometers.

How to Convert 138 cm to km

To convert centimeters to kilometers, you can use the following formula:

[ text{km} = text{cm} div 100,000 ]

For 138 cm, the calculation is:

[ text{km} = 138 div 100,000 = 0.00138]

Thus, 138 cm is equal to 0.00138 km.

FAQs

How many centimeters are in a kilometer?

There are 100,000 centimeters in a kilometer.

Why convert cm to km?

Converting cm to km is useful for understanding larger distances in a more manageable unit, especially in travel and geographic contexts.

Can I convert kilometers to centimeters?

Yes, to convert kilometers to centimeters, multiply the number of kilometers by 100,000.