Light-years (ly) to Nautical miles (nmi) Conversion
Light-years
The light-year is a unit of astronomical distance equal to the distance that light travels in a vacuum in one Julian year (365.25 days), approximately 9.461 × 10¹⁵ metres. Despite containing the word "year," it is strictly a unit of distance, not time. The nearest star system, Alpha Centauri, is approximately 4.37 light-years away, while the observable universe extends approximately 46 billion light-years in every direction.
Nautical miles
The nautical mile is a unit of length equal to exactly 1,852 metres, adopted internationally in 1929. Unlike most length units, it is geometrically derived: it corresponds to one arcminute (1/60 of a degree) of latitude, making it naturally suited to navigation on the spherical surface of the globe. Speed in nautical miles per hour is expressed in knots.
| Light-years (ly) | Nautical miles (nmi) |
|---|---|
| 0.1 ly | 510,838,578,433.0886 nmi |
| 1 ly | 5,108,385,784,330.886 nmi |
| 2 ly | 10,216,771,568,661.771 nmi |
| 3 ly | 15,325,157,352,992.656 nmi |
| 5 ly | 25,541,928,921,654.43 nmi |
| 10 ly | 51,083,857,843,308.86 nmi |
| 20 ly | 102,167,715,686,617.72 nmi |
| 30 ly | 153,251,573,529,926.56 nmi |
| 50 ly | 255,419,289,216,544.28 nmi |
| 100 ly | 510,838,578,433,088.56 nmi |
| 1000 ly | 5,108,385,784,330,886.00 nmi |
Frequently Asked Questions (FAQ)
How many nautical miles are in 1 light-years?
1 light-years (ly) is exactly 5,108,385,784,331 nautical miles (nmi).
How do I convert light-years to nautical miles?
Multiply the value in light-years by 5,108,385,784,331 to get the result in nautical miles. Or use the converter above — type any number and see the result instantly.