Convert kilometer to Planck length
Please provide values below to convert kilometer [km] to Planck length [l_P], or Convert Planck length to kilometer.
How to Convert Kilometer to Planck Length
1 km = 6.18714249917247e+37 l_P
Example: convert 15 km to l_P:
15 km = 15 × 6.18714249917247e+37 l_P = 9.2807137487587e+38 l_P
Kilometer to Planck Length Conversion Table
| kilometer | Planck length |
|---|
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.
Planck Length
The Planck length is the smallest possible unit of length in the universe, approximately 1.6 x 10⁻³⁵ meters.
History/Origin
The Planck length is derived from fundamental physical constants and is named after the physicist Max Planck. It is a fundamental unit in the system of Planck units.
Current Use
The Planck length is a theoretical concept used in quantum gravity and cosmology to describe phenomena at the smallest scales of the universe.