›› Measurement unit: light second

Full name: light second

Plural form: light seconds

Alternate spelling: lightsecond

Category type: length

Scale factor: 299792458


›› SI unit: metre

The SI base unit for length is the metre.
1 metre is equal to 3.33564095198E-9 light second.


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›› Definition: Light-second

A light-second is a unit of length. It is defined as the distance light travels in an absolute vacuum in one second or 299,792,458 meters. Note that this value is considered exact, since the meter is actually (as of 1983) defined in terms of the light second. It is just over 186,282 miles and almost 109 feet.


›› Sample conversions: light second

light second to league [US statute]
light second to city block [South, West U.S.]
light second to mile [Scottish]
light second to football field [U.S., complete]
light second to ell [English]
light second to parasang
light second to light year
light second to vershok
light second to mile [statute, international]
light second to arshin [iran]