A light-year is the distance that light travels in a vacuum in one Julian year (365.25 days). It's a unit used to measure astronomical distances.

One light-year is approximately 9.461 trillion meters (9,461,000,000,000 meters).

While light-years are useful for vast cosmic distances, converting to meters allows for comparison with more familiar scales and for use in specific scientific calculations that require SI units.

0.5 light-year is equal to 4,730,500,000,000,000 meters, or about 4.73 quadrillion meters.