Convert kilometer to Earth's equatorial radius
Please provide values below to convert kilometer [km] to Earth's equatorial radius [R_e], or Convert Earth's equatorial radius to kilometer.
How to Convert Kilometer to Earth's Equatorial Radius
1 km = 0.00015678559428874 R_e
Example: convert 15 km to R_e:
15 km = 15 × 0.00015678559428874 R_e = 0.0023517839143311 R_e
Kilometer to Earth's Equatorial Radius Conversion Table
| kilometer | Earth's equatorial radius |
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Kilometer
A kilometer is a unit of length in the metric system, equal to one thousand meters.
History/Origin
The term "kilometer" is derived from the Greek words "khilioi" (thousand) and "metron" (measure). The kilometer was first defined as part of the metric system in France in 1795.
Current Use
The kilometer is the most widely used unit of distance for road signs and travel distances in the world, with the notable exceptions of the United States and the United Kingdom.
Earth's Equatorial Radius
The Earth's equatorial radius is the distance from the center of the Earth to the equator, approximately 6,378.1 kilometers.
History/Origin
The size and shape of the Earth have been a subject of study since ancient times. Modern measurements are made using satellite geodesy.
Current Use
The Earth's equatorial radius is a fundamental parameter in geodesy, geophysics, and astronomy. It is used in cartography and for defining the shape of the Earth.