Nautical Mile to Light Year Converter
Convert Nautical Mile (nmi) to Light Year (ly) instantly. 1 nmi = 1.957566e-13 ly.
Length Converter
31 units available
1 nmi = 1.957566e-13 ly
Formula:
ly = nmi × 1.957566e-13With your value: 1 nmi = 1.957566e-13 ly
How big is that?
Everyday references on a logarithmic scale, all expressed in nautical mile so you can sanity-check the result.
Other Nautical Mile to Light Year conversions
Nautical Mile to Light Year Conversion Table
| Nautical Mile (nmi) | Light Year (ly) |
|---|---|
| 0.5 | 9.787828e-14 |
| 1 | 1.957566e-13 |
| 2 | 3.915131e-13 |
| 5 | 9.787828e-13 |
| 10 | 1.957566e-12 |
| 15 | 2.936348e-12 |
| 20 | 3.915131e-12 |
| 25 | 4.893914e-12 |
| 50 | 9.787828e-12 |
| 100 | 1.957566e-11 |
| 250 | 4.893914e-11 |
| 500 | 9.787828e-11 |
| 1000 | 1.957566e-10 |
Light Year to Nautical Mile Conversion Table
| Light Year (ly) | Nautical Mile (nmi) |
|---|---|
| 0.5 | 2.554193e+12 |
| 1 | 5.108386e+12 |
| 2 | 1.021677e+13 |
| 5 | 2.554193e+13 |
| 10 | 5.108386e+13 |
| 15 | 7.662579e+13 |
| 20 | 1.021677e+14 |
| 25 | 1.277096e+14 |
| 50 | 2.554193e+14 |
| 100 | 5.108386e+14 |
| 250 | 1.277096e+15 |
| 500 | 2.554193e+15 |
| 1000 | 5.108386e+15 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Nautical Mile (nmi)
Length
1 international nautical mile = 1852 m exactly, adopted by the First International Extraordinary Hydrographic Conference (1929).
Source: Units accepted for use with the SI, SI Brochure Table 8
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Light Year (ly)
Length
A light-year is the distance light travels in one Julian year: 9 460 730 472 580 800 m exactly.
Source: IAU Resolution B2 (2012) — definition of the astronomical unit; IAU B2 (2015) nominal values
International Astronomical Union · Reviewed 2026-07-01
How to Convert Nautical Mile to Light Year
To convert from Nautical Mile (nmi) to Light Year (ly), multiply the value by 1.957566e-13.
Formula: ly = nmi × 1.957566e-13
Reverse: nmi = ly × 5.108386e+12
Step-by-Step Example
- Start with your value in Nautical Mile. For example: 5 nmi
- Multiply by the conversion factor: 5 x 1.957566e-13
- The result is: 9.787828e-13 ly
About Nautical Mile
The nautical mile equals 1,852 meters and is used primarily in aviation and maritime navigation.
Fun Fact: One nautical mile corresponds to one minute of latitude on the Earth's surface.
Common uses: navigation, aviation, maritime.
About Light Year
A light year is the distance light travels through a vacuum in one Julian year — exactly 9,460,730,472,580,800 metres. It is a unit of distance, not of time.
Fun Fact: Proxima Centauri, the nearest star to the Sun, sits about 4.25 light years away.
Common uses: astronomy, popular science, education.
Frequently Asked Questions
How many Light Year are in 1 Nautical Mile?
There are exactly 1.957566e-13 Light Year in 1 Nautical Mile. This means the conversion factor from Nautical Mile to Light Year is 1.957566e-13.
What is the formula to convert Nautical Mile to Light Year?
The formula to convert Nautical Mile to Light Year is: ly = nmi × 1.957566e-13. For example, to convert 10 Nautical Mile to Light Year, you would multiply 10 by 1.957566e-13.
What is a Nautical Mile?
The nautical mile equals 1,852 meters and is used primarily in aviation and maritime navigation.
What is a Light Year?
A light year is the distance light travels through a vacuum in one Julian year — exactly 9,460,730,472,580,800 metres. It is a unit of distance, not of time.
What are the common uses of Nautical Mile?
The Nautical Mile is commonly used in navigation, aviation, maritime.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). Nautical Mile to Light Year converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/nautical_mile-to-light_year