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`LD = f( km )`

Enter a value for all fields

The **Kilometers to Light-Day **calculator converts a measurement of length in kilometers to light-days.

**INSTRUCTIONS:** Choose units and enter the following:

- (
**km**) This is the distance in kilometers

**Light-Days(LD)**: The calculator returns the distance in light-days. However, this can be automatically converted to other units via the pull-down menu.

A light-day is the distance traveled at the speed of light in one day (24 hours).