Nautical Mile (nmi)
The nautical mile is exactly 1852 metres, close to one minute of latitude. Speed in nautical miles per hour is the knot.
Symbol: nmi
Quantity: length and distance
SI relation: 1 nmi = 1852 m (exact)
Derivation: 1 nmi = 1852 m (exact, by international agreement, 1929)
Exact: yes, by definition
Typical uses
- Marine and air navigation
- Territorial waters (12 nmi) and exclusive economic zones (200 nmi)
- Aviation ranges and flight planning
Convert nautical miles to other units
| Conversion | 1 nmi equals | Reverse |
|---|---|---|
| nautical mile to meter | 1852 m | meter to nautical mile |
| nautical mile to kilometer | 1.852 km | kilometer to nautical mile |
| nautical mile to centimeter | 185200 cm | centimeter to nautical mile |
| nautical mile to millimeter | 1852000 mm | millimeter to nautical mile |
| nautical mile to mile | 1.150779448 mi | mile to nautical mile |
| nautical mile to foot | 6076.115486 ft | foot to nautical mile |
| nautical mile to inch | 72913.38583 in | inch to nautical mile |
| nautical mile to micrometer | 1852000000 µm | micrometer to nautical mile |
| nautical mile to nanometer | 1852000000000 nm | nanometer to nautical mile |
| nautical mile to yard | 2025.371829 yd | yard to nautical mile |
| nautical mile to angstrom | 18520000000000 Å | angstrom to nautical mile |
| nautical mile to mil | 72913385.83 mil | mil to nautical mile |
Open the Length Converter to convert any value between all units.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "nautical mile".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Nautical Mile (nmi). Retrieved October 17, 2026, from https://scientificconverters.com/units/nautical-mile/
IEEE
Scientific Converters, "Nautical Mile (nmi)," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/units/nautical-mile/