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 quarter
light-second to mile [Britain, ancient]
light-second to fist
light-second to fingerbreadth
light-second to seemeile
light-second to myriametre
light-second to city block [Midwest U.S.]
light-second to city block [East U.S.]
light-second to alen [Swedish]
light-second to gigaparsec