**Full name:** light hour

**Plural form:** light hours

**Alternate spelling:** lighthour

**Category type:** length

**Scale factor:** 1079252848800

The SI base unit for length is the metre.

1 metre is equal to 9.26566931106E-13 light hour.

Valid units must be of the **length** type.

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A light-hour (also written light hour) is a unit of length. It is the distance travelled by light in vacuum in one hour. Based on the current definition of the metre a light-hour is equal to 1,079,252,848,800 metres (~1.08 Tm).

light hour to ligne [France]

light hour to klafter [Switzerland]

light hour to estadio [Portugal]

light hour to micrometre

light hour to button measure

light hour to palm [Britain, Roman minor]

light hour to foot [survey]

light hour to gigametre

light hour to palmo [Portuguese]