# Kilometers to Light-hours

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vCalc.Kilometers to Light-hours
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The Kilometers to Light-Hour calculator converts a measurement of length in kilometers to light-hours.

INSTRUCTIONS: Choose units and enter the following:

• (km)  This is the distance in kilometers

Light-Minutes (LH):  The calculator returns the distance in light-hours.  However, this can be automatically converted to other units via the pull-down menu.

#### The Math / Science

A light-hour is the distance traveled at the speed of light in one hour (60 minutes).