›› 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 mil
light second to twip
light second to arpent [France]
light second to hvat [Croatia]
light second to palmo [Texas]
light second to braza [Argentina]
light second to lieue [France, metric]
light second to quarter [cloth]
light second to digit
light second to cubit [Egyption]