Convert nautical miles to astronomical units
1 nmi = 0.0000000123798553504 au — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
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Show this value in all 50 length units
- Gigameters Gm 0.000 001 852
- Megameters Mm 0.001 852
- Kilometers km 1.852
- Hectometers hm 18.52
- Decameters dam 185.2
- Meters m 1852
- Decimeters dm 18 520
- Centimeters cm 185 200
- Millimeters mm 1 852 000
- Micrometers µm 1 852 000 000
- Nanometers nm 1 852 000 000 000
- Picometers pm 1 852 000 000 000 000
- Femtometers fm 1.852e+18
- Inches in 72 913.385 826 8
- Feet ft 6076.115 485 56
- Yards yd 2025.371 828 52
- Miles mi 1.150 779 448 02
- Nautical miles nmi 1
- Thous thou 72 913 385.8268
- Hands hh 18 228.346 456 7
- Links li 9206.235 584 19
- Spans span 8101.487 314 09
- Cubits cubit 4050.743 657 04
- Ells ell 1620.297 462 82
- Fathoms ftm 1012.685 914 26
- Rods rd 368.249 423 368
- Chains ch 92.062 355 841 9
- Furlongs fur 9.206 235 584 19
- Leagues lea 0.383 593 149 341
- Barleycorns barleycorn 218 740.157 48
- US survey feet ft (US) 6076.103 333 33
- US survey miles mi (US) 1.150 777 146 46
- Ångströms Å 18 520 000 000 000
- Microns µ 1 852 000 000
- Bohr radiuss a₀ 34 997 727 851 800
- Planck lengths ℓₚ 1.14585879085e+38
- Astronomical units au 1.23798553504e-8
- Light-years ly 1.95756554461e-13
- Light-seconds ls 0.000 006 177 607 043 07
- Light-minutes lmin 0.000 000 102 960 117 384
- Parsecs pc 6.00192324405e-14
- Kiloparsecs kpc 6.00192324405e-17
- Megaparsecs Mpc 6.00192324405e-20
- Solar radiuss R☉ 0.000 002 662 066 982 89
- Earth radiuss R🜨 0.000 290 692 199 027
- Point (DTP)s pt 5 249 763.779 53
- Picas pc 437 480.314 961
- Scandinavian miles mil 0.1852
- Versts вер 1.736 032 995 88
- Lis 里 3.704
Every row is Nautical mile (nmi) converted through the meter, in exact rational arithmetic.
How to convert nautical miles to astronomical units
Multiply the number of nautical miles by 0.0000000123798553504 to get astronomical units.
Nautical mile: Exactly 1852 m by international agreement — roughly one minute of latitude.
Astronomical unit: Fixed at exactly 149 597 870 700 m by the IAU in 2012.
Nautical mile to Astronomical unit conversion table
| Nautical miles (nmi) | Astronomical units (au) |
|---|---|
| 1 nmi | 1.2379855e-8 |
| 2 nmi | 2.4759711e-8 |
| 3 nmi | 3.7139566e-8 |
| 5 nmi | 6.1899277e-8 |
| 10 nmi | 0.000 000 123 798 55 |
| 20 nmi | 0.000 000 247 597 11 |
| 25 nmi | 0.000 000 309 496 38 |
| 50 nmi | 0.000 000 618 992 77 |
| 100 nmi | 0.000 001 237 985 5 |
| 250 nmi | 0.000 003 094 963 8 |
| 500 nmi | 0.000 006 189 927 7 |
| 1000 nmi | 0.000 012 379 855 |
Astronomical unit to Nautical mile conversion table
| Astronomical units (au) | Nautical miles (nmi) |
|---|---|
| 1 au | 80 776 388 |
| 2 au | 161 552 780 |
| 3 au | 242 329 160 |
| 5 au | 403 881 940 |
| 10 au | 807 763 880 |
| 20 au | 1 615 527 800 |
| 25 au | 2 019 409 700 |
| 50 au | 4 038 819 400 |
| 100 au | 8 077 638 800 |
| 250 au | 20 194 097 000 |
| 500 au | 40 388 194 000 |
| 1000 au | 80 776 388 000 |
Frequently asked
How many astronomical units are in a nautical mile?
One nautical mile equals 1.237985535e-8 astronomical units (nmi → au). That figure is exact, not rounded.
How do you convert nautical miles to astronomical units?
Multiply the number of nautical miles by 0.0000000123798553504 to get astronomical units.
What is 1 au in nautical miles?
One astronomical unit is 80776388.07 nautical miles.
What is 10 nmi in au?
10 nmi = 0.000 000 123 798 55 au.
What exactly is a nautical mile?
Exactly 1852 m by international agreement — roughly one minute of latitude.
What exactly is a astronomical unit?
Fixed at exactly 149 597 870 700 m by the IAU in 2012.