Speed of Light to Kilometers per Second Calculator

299,792.458
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Understanding Speed of Light Conversion

What is the Speed of Light?

The speed of light (c) is one of the fundamental constants of nature, traveling at exactly 299,792,458 meters per second in a vacuum. This speed limit of the universe was defined in 1983 and is used to establish the definition of the meter.

Conversion Formula

To convert from speed of light (c) to kilometers per second (km/s), use this formula:

km/s = c × 299,792.458

Common Applications

  • Astronomical calculations
  • Relativistic physics
  • Space travel calculations
  • Telecommunications
  • GPS systems