Convert Light Years to Meters
Convert Light Years (ly) to Meters (m) instantly and accurately.
Conversion Formula
m = ly × 9.460730473e+15
About Light Years
A light year (ly) is the distance light travels in one year through a vacuum, approximately 9.46 trillion kilometers. This is the primary unit for measuring stellar distances. Our nearest star neighbor, Proxima Centauri, is 4.24 light years away, meaning its light takes over 4 years to reach us. The center of our Milky Way galaxy is about 26,000 light years distant, and the nearest large galaxy (Andromeda) is 2.5 million light years away. When we observe distant objects, we're literally seeing them as they were years ago.
About Meters
The meter (m) is the fundamental unit of length in the International System of Units (SI) and is used worldwide. Originally defined as one ten-millionth of the distance from the Earth's equator to the North Pole, it's now precisely defined as the distance light travels in a vacuum in 1/299,792,458 of a second. A meter is roughly the height of a kitchen counter, the width of a large door, or one large step for an adult. Most countries use meters for measuring room sizes, building heights, and short distances.
Quick Reference Table
| Light Years (ly) | Meters (m) |
|---|---|
| 1 ly | 9.461 × 1015 m |
| 2 ly | 1.892 × 1016 m |
| 5 ly | 4.73 × 1016 m |
| 10 ly | 9.461 × 1016 m |
| 25 ly | 2.365 × 1017 m |
| 50 ly | 4.73 × 1017 m |
| 100 ly | 9.461 × 1017 m |