Convert attometer to kilometer
Please provide values below to convert attometer [am] to kilometer [km], or Convert kilometer to attometer.
How to Convert Attometer to Kilometer
1 am = 1e-21 km
Example: convert 15 am to km:
15 am = 15 × 1e-21 km = 1.5e-20 km
Attometer to Kilometer Conversion Table
| attometer | kilometer |
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Attometer
An attometer is a unit of length in the metric system equal to 10^-18 meters.
History/Origin
The prefix "atto-" for 10^-18 was adopted by the CGPM (General Conference on Weights and Measures) in 1964.
Current Use
The attometer is used in high-energy physics to describe the scales relevant to quarks and leptons.
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.