Convert 21 km to Miles

Converting kilometers to miles is a common task for travelers and fitness enthusiasts. In this post, we will convert 21 kilometers into miles using a simple formula.

km Definition

A kilometer (km) is a unit of length in the metric system, equivalent to 1,000 meters. It is widely used around the world for measuring distances in various fields, including transportation, athletics, and geography.

Miles Definition

A mile is a unit of distance commonly used in the United States and the United Kingdom, equivalent to 5,280 feet or approximately 1.60934 kilometers. Miles are often used in road signs, running events, and other forms of distance measurement.

How to Convert 21 km to Miles

To convert kilometers to miles, you can use the formula:

Miles = Kilometers x 0.621371

For example, to convert 21 km to miles:

Miles = 21 km x 0.621371 = 13.048 miles

Therefore, 21 kilometers is approximately 13.05 miles.

FAQs

What is the exact conversion of 1 km to miles?

1 kilometer is approximately equal to 0.621371 miles.

How many miles are there in 5 kilometers?

5 kilometers is approximately equal to 3.10686 miles.

Why do some countries use kilometers instead of miles?

Most countries use the metric system, which includes kilometers as a standard unit for measuring distance, promoting consistency and ease of calculation.