Convert Earth's equatorial radius to kilometer
Earth's equatorial radius
Definition:
kilometer
Definition: A kilometer (symbol: km) is a unit of length in the International System of Units (SI). One kilometer is equivalent to 0.6214 miles.
History/origin: The prefix kilo- is a metric prefix indicating one thousand. One kilometer is therefore one thousand meters. The origin of the kilometer is linked to that of the meter, and its current definition as the distance traveled by light in 1/299 792 458 second. This definition is subject to change, but the relationship between the meter and the kilometer will remain constant.
Current use: It is currently the official unit of measurement for expressing distances between geographical places on land in most of the world. However, there still remain a number of countries that primarily use the mile instead of the kilometer including the United States and the United Kingdom (UK). Unlike the United States, the UK has adopted the metric system; while the metric system is widely used in government, commerce, and industry, remnants of the imperial system can still be seen in the UK's use of miles in its road systems.
Earth's equatorial radius to kilometer Conversion Table
| Earth's equatorial radius [radius] | kilometer [km] |
|---|---|
| 0.01 radius | 63.78 km |
| 0.10 radius | 637.82 km |
| 1 radius | 6378 km |
| 2 radius | 12756 km |
| 3 radius | 19134 km |
| 5 radius | 31891 km |
| 10 radius | 63782 km |
| 20 radius | 127563 km |
| 50 radius | 318908 km |
| 100 radius | 637816 km |
| 1000 radius | 6378160 km |
How to Convert Earth's equatorial radius to kilometer
1 radius = 6378 km
1 km = 0.000157 radius
Example
Convert 15 radius to km:
15 radius = 15 × 6378 km = 95672 km
