## Measurement unit: light-minute

**Full name:** light minute

**Plural form:** light minutes

**Alternate spelling:** lightminute

**Category type:** length

**Scale factor:** 17987547480

## SI unit: metre

The SI base unit for length is the metre.

1 metre is equal to 5.5594015866359E-11 light-minute.

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

You can use this form to select from known units:

## Definition: Light-minute

A light-minute (also written light minute) is a unit of length. It is defined as the distance light travels in an absolute vacuum in one minute or 17,987,547,480 metres (~18 Gm). Note that this value is exact, since the metre is actually defined in terms of the light-second.

## Sample conversions: light-minute