Astronomical Unit to Nautical Mile Converter
Quick answer
To convert Astronomical Units to Nautical Miles, multiply by 80,776,388.06695464 (or divide by 1.237986e-8). Therefore, 1 Astronomical Unit (AU) equals 80,776,388.06695464 Nautical Miles (nmi).
Formula: nmi = AU × 80,776,388.06695464. Worked example: 10 AU = 807,763,880.669547 nmi.
Convert Astronomical Unit (AU) to Nautical Mile (nmi) online with our free unit converter. In length, 1 AU = 80,776,388.066955 nmi. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Astronomical Unit to Nautical Mile
- Step 1 — start with the formula. nmi = AU × 80,776,388.06695464
- Step 2 — substitute your figure. 10 AU × 80,776,388.06695464
- Step 3 — read the result. 10 AU = 807,763,880.669547 nmi
- Step 4 — check it in reverse. AU = nmi × 1.237986e-8 returns Invalid AU, which matches the figure you started with.
Length Converter
31 units available
1 AU = 80,776,388.066955 nmi
Formula:
nmi = AU × 80,776,388.06695464With your value: 1 AU = 80,776,388.06695464 nmi
How big is that?
Everyday references on a logarithmic scale, all expressed in astronomical unit so you can sanity-check the result.
Other Astronomical Unit to Nautical Mile conversions
Astronomical Unit to Nautical Mile Conversion Table
| Astronomical Unit (AU) | Nautical Mile (nmi) |
|---|---|
| 0.5 | 40,388,194.033477 |
| 1 | 80,776,388.066955 |
| 2 | 161,552,776.133909 |
| 5 | 403,881,940.334773 |
| 10 | 807,763,880.669547 |
| 15 | 1,211,645,821.00432 |
| 20 | 1,615,527,761.339093 |
| 25 | 2,019,409,701.673866 |
| 50 | 4,038,819,403.347732 |
| 100 | 8,077,638,806.695464 |
| 250 | 20,194,097,016.738663 |
| 500 | 40,388,194,033.477325 |
| 1000 | 80,776,388,066.95465 |
Nautical Mile to Astronomical Unit Conversion Table
| Nautical Mile (nmi) | Astronomical Unit (AU) |
|---|---|
| 0.5 | 6.189928e-9 |
| 1 | 1.237986e-8 |
| 2 | 2.475971e-8 |
| 5 | 6.189928e-8 |
| 10 | 1.237986e-7 |
| 15 | 1.856978e-7 |
| 20 | 2.475971e-7 |
| 25 | 3.094964e-7 |
| 50 | 6.189928e-7 |
| 100 | 1.237986e-6 |
| 250 | 3.094964e-6 |
| 500 | 6.189928e-6 |
| 1000 | 1.237986e-5 |
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.
Astronomical Unit (AU)
Length
The astronomical unit is exactly 149 597 870 700 m (IAU Resolution B2, 2012).
Source: IAU Resolution B2 (2012) — definition of the astronomical unit; IAU B2 (2015) nominal values
International Astronomical Union · Reviewed 2026-07-01
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
How to Convert Astronomical Unit to Nautical Mile
To convert from Astronomical Unit (AU) to Nautical Mile (nmi), multiply the value by 80,776,388.06695464.
Formula: nmi = AU × 80,776,388.06695464
Reverse: AU = nmi × 1.237986e-8
Step-by-Step Example
- Start with your value in Astronomical Unit. For example: 5 AU
- Multiply by the conversion factor: 5 x 80,776,388.06695464
- The result is: 403,881,940.334773 nmi
Astronomical Unit and Nautical Mile Relationship
This conversion bridges the Astronomical and US Customary / Imperial measurement systems, commonly required when translating scientific data, international engineering specifications, or trade standards. Since 1 Astronomical Unit equals approximately 8.078e+7 Nautical Miles, the Astronomical Unit represents a larger unit interval than the Nautical Mile. Understanding the relationship between Astronomical Unit and Nautical Mile is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Astronomical Unit
The astronomical unit (AU) is defined as exactly 149,597,870,700 metres, close to the mean Earth–Sun distance. It is the natural yardstick for the Solar System.
Common uses of Astronomical Unit: planetary science, orbital mechanics, astronomy.
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 of Nautical Mile: navigation, aviation, maritime.
Frequently Asked Questions
- How many Nautical Miles are in 1 Astronomical Unit?
- There are exactly 80,776,388.06695464 Nautical Miles in 1 Astronomical Unit. This means the conversion factor from Astronomical Unit to Nautical Mile is 80,776,388.06695464.
- What is the formula to convert Astronomical Unit to Nautical Mile?
- The formula to convert Astronomical Unit to Nautical Mile is: nmi = AU × 80,776,388.06695464. For example, to convert 10 Astronomical Units to Nautical Miles, you would multiply 10 by 80,776,388.06695464.
- What is a Astronomical Unit?
- The astronomical unit (AU) is defined as exactly 149,597,870,700 metres, close to the mean Earth–Sun distance. It is the natural yardstick for the Solar System.
- What is a Nautical Mile?
- The nautical mile equals 1,852 meters and is used primarily in aviation and maritime navigation.
- What are the common uses of Astronomical Unit?
- The Astronomical Unit is commonly used in planetary science, orbital mechanics, astronomy.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). Astronomical Unit to Nautical Mile converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/astronomical_unit-to-nautical_mile