Nautical Miles to Metres Converter
Convert nautical miles to metres — one nautical mile is exactly 1,852 m. Results update as you type; exact factors shown.
One nautical mile is 1,852 metres — see the exact factor, not a rounded rule of thumb.
How the nautical miles to metres converter works
Every length is converted through the metre, the SI base unit of length. The inch has been defined as exactly 25.4 mm since the 1959 international yard and pound agreement, so a foot is exactly 0.3048 m, a yard 0.9144 m and a statute mile 1,609.344 m. The nautical mile is 1,852 m by international definition.
Australia is fully metric under the National Measurement Act 1960; imperial units appear only in trade with the US and in older documents.
Common length conversions
| From | To | Units |
|---|---|---|
| 0.1 nmi | 185.2 m | nautical miles to metres |
| 0.5 nmi | 926 m | nautical miles to metres |
| 1 nmi | 1,852 m | nautical mile to metres |
| 2 nmi | 3,704 m | nautical miles to metres |
| 5 nmi | 9,260 m | nautical miles to metres |
| 10 nmi | 18,520 m | nautical miles to metres |
| 12 nmi | 22,224 m | nautical miles to metres |
| 20 nmi | 37,040 m | nautical miles to metres |
| 50 nmi | 92,600 m | nautical miles to metres |
| 100 nmi | 185,200 m | nautical miles to metres |
| 200 nmi | 370,400 m | nautical miles to metres |
| 1,000 nmi | 1,852,000 m | nautical miles to metres |
Units in this converter and their exact factors
| Unit | Symbol | One unit in metres |
|---|---|---|
| millimetre | mm | 0.001 metre |
| centimetre | cm | 0.01 metre |
| metre | m | 1 metre |
| kilometre | km | 1,000 metre |
| inch | in | 0.0254 metre |
| foot | ft | 0.3048 metre |
| yard | yd | 0.9144 metre |
| mile | mi | 1,609.344 metre |
| nautical mile | nmi | 1,852 metre |
FAQFrequently asked questions about length conversion
How many metres in a nautical mile?
Exactly 1,852, by international agreement in 1929.
Why 1,852?
It approximates one minute of latitude, so a degree of latitude is 60 nautical miles.
What is 12 nautical miles?
22,224 m — the standard territorial sea limit.
How does it compare to a statute mile?
About 15% longer: 1,852 m against 1,609.344.
What is a knot?
One nautical mile per hour.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Measurement Institute (NMI) — Australia's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.