Full name: light second
Plural form: light seconds
Alternate spelling: lightsecond
Category type: length
Scale factor: 299792458
The SI base unit for length is the metre.
1 metre is equal to 3.3356409519815E-9 light-second.
Valid units must be of the length type.
You can use this form to select from known units:
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.
light-second to pu [China]
light-second to mille [French]
light-second to megalight year
light-second to estadio [Portugal]
light-second to lap [old]
light-second to mile [statute]
light-second to miglio
light-second to furlong [international]
light-second to nanon
light-second to league [nautical]