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    Astronomical Unit to Nautical Mile Converter

    Convert Astronomical Unit (AU) to Nautical Mile (nmi) instantly. 1 AU = 80,776,388.066955 nmi.

    Length Converter

    31 units available

    Decimals:
    80,776,388.066955

    1 AU = 80,776,388.066955 nmi

    Formula:

    nmi = AU × 80,776,388.06695464

    With 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.

    Olympic pool (1/3.0e+9 your value)3.34e-10 AU
    Football pitch (length) (1/1.4e+9 your value)7.02e-10 AU
    Eiffel Tower (1/4.5e+8 your value)2.21e-9 AU
    Burj Khalifa (1/1.8e+8 your value)5.53e-9 AU
    Marathon (1/3.5e+6 your value)2.82e-7 AU
    Your value1.00 AU

    Other Astronomical Unit to Nautical Mile conversions

    2 AU to nmi3 AU to nmi4 AU to nmi5 AU to nmi6 AU to nmi7 AU to nmi8 AU to nmi

    Astronomical Unit to Nautical Mile Conversion Table

    Astronomical Unit (AU)Nautical Mile (nmi)
    0.540,388,194.033477
    180,776,388.066955
    2161,552,776.133909
    5403,881,940.334773
    10807,763,880.669547
    151,211,645,821.00432
    201,615,527,761.339093
    252,019,409,701.673866
    504,038,819,403.347732
    1008,077,638,806.695464
    25020,194,097,016.738663
    50040,388,194,033.477325
    100080,776,388,066.95465

    Nautical Mile to Astronomical Unit Conversion Table

    Nautical Mile (nmi)Astronomical Unit (AU)
    0.56.189928e-9
    11.237986e-8
    22.475971e-8
    56.189928e-8
    101.237986e-7
    151.856978e-7
    202.475971e-7
    253.094964e-7
    506.189928e-7
    1001.237986e-6
    2503.094964e-6
    5006.189928e-6
    10001.237986e-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

    Exact conversion

    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

    Conventional value

    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

    1. Start with your value in Astronomical Unit. For example: 5 AU
    2. Multiply by the conversion factor: 5 x 80,776,388.06695464
    3. The result is: 403,881,940.334773 nmi

    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: 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: navigation, aviation, maritime.

    Frequently Asked Questions

    How many Nautical Mile are in 1 Astronomical Unit?

    There are exactly 80,776,388.06695464 Nautical Mile 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 Unit to Nautical Mile, 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

    Meter → Nautical MileKilometer → Nautical MileCentimeter → Nautical MileMillimeter → Nautical MileMicrometer → Nautical MileNanometer → Nautical MileAngstrom → Nautical MileMile → Nautical MileYard → Nautical Mile

    Cite this page

    UnitConvertLab. (2026). Astronomical Unit to Nautical Mile converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/astronomical_unit-to-nautical_mile