Convert kilometers to nautical miles
1 km = 0.539956803456 nmi — 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
- Megameters Mm 0.001
- Kilometers km 1
- Hectometers hm 10
- Decameters dam 100
- Meters m 1000
- Decimeters dm 10 000
- Centimeters cm 100 000
- Millimeters mm 1 000 000
- Micrometers µm 1 000 000 000
- Nanometers nm 1 000 000 000 000
- Picometers pm 1 000 000 000 000 000
- Femtometers fm 1e+18
- Inches in 39 370.078 740 2
- Feet ft 3280.839 895 01
- Yards yd 1093.613 298 34
- Miles mi 0.621 371 192 237
- Nautical miles nmi 0.539 956 803 456
- Thous thou 39 370 078.7402
- Hands hh 9842.519 685 04
- Links li 4970.969 537 9
- Spans span 4374.453 193 35
- Cubits cubit 2187.226 596 68
- Ells ell 874.890 638 67
- Fathoms ftm 546.806 649 169
- Rods rd 198.838 781 516
- Chains ch 49.709 695 379
- Furlongs fur 4.970 969 537 9
- Leagues lea 0.207 123 730 746
- Barleycorns barleycorn 118 110.236 22
- US survey feet ft (US) 3280.833 333 33
- US survey miles mi (US) 0.621 369 949 495
- Ångströms Å 10 000 000 000 000
- Microns µ 1 000 000 000
- Bohr radiuss a₀ 18 897 261 259 100
- Planck lengths ℓₚ 6.18714249917e+37
- Astronomical units au 6.68458712227e-9
- Light-years ly 1.05700083402e-13
- Light-seconds ls 0.000 003 335 640 951 98
- Light-minutes lmin 5.55940158664e-8
- Parsecs pc 3.24077928944e-14
- Kiloparsecs kpc 3.24077928944e-17
- Megaparsecs Mpc 3.24077928944e-20
- Solar radiuss R☉ 0.000 001 437 401 178 67
- Earth radiuss R🜨 0.000 156 961 230 576
- Point (DTP)s pt 2 834 645.669 29
- Picas pc 236 220.472 441
- Scandinavian miles mil 0.1
- Versts вер 0.937 382 827 147
- Lis 里 2
Every row is Kilometer (km) converted through the meter, in exact rational arithmetic.
How to convert kilometers to nautical miles
Multiply the number of kilometers by 0.539956803456 to get nautical miles.
Nautical mile: Exactly 1852 m by international agreement — roughly one minute of latitude.
Kilometer to Nautical mile conversion table
| Kilometers (km) | Nautical miles (nmi) |
|---|---|
| 1 km | 0.539 956 8 |
| 2 km | 1.079 913 6 |
| 3 km | 1.619 870 4 |
| 5 km | 2.699 784 |
| 10 km | 5.399 568 |
| 20 km | 10.799 136 |
| 25 km | 13.498 92 |
| 50 km | 26.997 84 |
| 100 km | 53.995 68 |
| 250 km | 134.9892 |
| 500 km | 269.9784 |
| 1000 km | 539.9568 |
Nautical mile to Kilometer conversion table
| Nautical miles (nmi) | Kilometers (km) |
|---|---|
| 1 nmi | 1.852 |
| 2 nmi | 3.704 |
| 3 nmi | 5.556 |
| 5 nmi | 9.26 |
| 10 nmi | 18.52 |
| 20 nmi | 37.04 |
| 25 nmi | 46.3 |
| 50 nmi | 92.6 |
| 100 nmi | 185.2 |
| 250 nmi | 463 |
| 500 nmi | 926 |
| 1000 nmi | 1852 |
Frequently asked
How many nautical miles are in a kilometer?
One kilometer equals 0.5399568035 nautical miles (km → nmi). That figure is exact, not rounded.
How do you convert kilometers to nautical miles?
Multiply the number of kilometers by 0.539956803456 to get nautical miles.
What is 1 nmi in kilometers?
One nautical mile is 1.852 kilometers.
What is 10 km in nmi?
10 km = 5.399 568 nmi.
What exactly is a nautical mile?
Exactly 1852 m by international agreement — roughly one minute of latitude.