›› 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 3.3356409519815E-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 mile [statute]
light-second to legua [Spanish, post-1568]
light-second to Q
light-second to sagene
light-second to quadrant
light-second to stride [great]
light-second to faust [Hungary]
light-second to block [South, West U.S.]
light-second to braza [Spain]
light-second to lap [old]