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The speed of light is a physical constant, worth nearly 300,000 kilometers per second.

Common conversions of speeds

Convert miles per hour into kilometers per hour - mph into km/h Convert kilometers per hour into meters per second - km/h into m/s Convert mach (speeds of sound) into kilometers per hour - Ma into km/h Convert knots into kilometers per hour - nd into km/h Convert feet per hour into kilometers per hour - ft/h into km/h
The conversions are presented on informative purposes and without any warranty of any kind
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