5,000,000 inches is equal to 0.0000 light-years. This is because an inch is an incredibly small unit compared to a light-year.

A light-year is a unit of astronomical distance, representing how far light travels in a year (about 5.88 trillion miles). An inch is a tiny unit of length used for everyday objects, so converting inches to light-years results in a near-zero value.

Direct practical uses are very limited due to the extreme difference in scale. It's mainly used for educational purposes to illustrate the vastness of space and the minuscule size of everyday measurements in comparison.

5,000,000 inches is approximately 79 miles. This still represents a tiny fraction of a single light-year.