Convert exameter to kilometer
Please provide values below to convert exameter [Em] to kilometer [km], or Convert kilometer to exameter.
How to Convert Exameter to Kilometer
1 Em = 1e+15 km
Example: convert 15 Em to km:
15 Em = 15 × 1e+15 km = 1.5e+16 km
Exameter to Kilometer Conversion Table
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Exameter
An exameter is a unit of length in the metric system equal to 10^18 meters.
History/Origin
The prefix "exa-" for 10^18 was adopted by the CGPM (General Conference on Weights and Measures) in 1975.
Current Use
The exameter is used in astronomy to measure the vast distances between galaxies.
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.