Light Second ConversionsUse this easy and mobile-friendly calculator to convert between Light Seconds and other units of Astronomy.
1 Light Second ≈
0.000000031688088 Light Years
Light SecondsA light second is the distance that light travels in one second. It is exactly 299,792.458 kilometers or about 186,000 miles.
Light YearsA light year is the distance that light travels in one year. The year used by the International Astronomical Union is 365.25 days. A light year is defined as exactly 9,460,730,472,580.8 kilometers.