Correct. Light travels at 299,792,458 metres per second (299,792.458 km/s). This equates to about 9454254955488 km per year. Therefore, one light year is about equal to 9,454,254,955,488 km.
A light-year is defined as the distance that light can travel in 1 year. We can calculate this by multiplying the speed of light by 1 year (or 3.1557*10^7 seconds) to find the distance: d = c*t...