Convert miles to nautical miles
Mile (mi) to nautical mile (nmi). One mile equals 0.868976 nautical miles.
Formula
Mile to nautical mile conversion table
| Miles | Nautical miles | Nautical miles | Miles |
|---|---|---|---|
| 1 mi | 0.868976 nmi | 1 nmi | 1.1508 mi |
| 2 mi | 1.738 nmi | 2 nmi | 2.3016 mi |
| 3 mi | 2.6069 nmi | 3 nmi | 3.4523 mi |
| 5 mi | 4.3449 nmi | 5 nmi | 5.7539 mi |
| 10 mi | 8.6898 nmi | 10 nmi | 11.5078 mi |
| 20 mi | 17.3795 nmi | 20 nmi | 23.0156 mi |
| 50 mi | 43.4488 nmi | 50 nmi | 57.539 mi |
| 100 mi | 86.8976 nmi | 100 nmi | 115.08 mi |
| 500 mi | 434.49 nmi | 500 nmi | 575.39 mi |
| 1000 mi | 868.98 nmi | 1000 nmi | 1150.78 mi |
To convert miles to nautical miles, divide the number of miles by 1.1508. One mile equals 0.868976 nautical miles, and one nautical mile equals 1.1508 miles, so the relationship is fixed and exact. As a worked example, 10 mi comes to 8.6898 nmi. Enter your own figure in the converter above to get an instant answer, or use the swap button to flip the direction. This is a length conversion, and like every tool on UnitGlide it runs locally in your browser with no account or upload required. The table further down shows a range of common mile values already worked out in nautical miles, plus the reverse nautical mile to mile direction, which is handy for quick reference or double-checking a result by hand.
Frequently asked questions
How many nautical miles are in a mile?
One mile equals 0.868976 nautical miles. The ratio is constant, so you can multiply any number of miles by 0.868976 to get nautical miles.
What is the formula to convert miles to nautical miles?
Use nautical miles = miles ÷ 1.1508. UnitGlide applies this exact formula for every value, so results stay accurate across the whole range.
How do I convert nautical miles back to miles?
Go the other way by using one nautical mile equals 1.1508 miles. You can also press the swap button in the converter above to flip the direction in one click.
Is this mile to nautical mile converter accurate?
Yes. It uses internationally defined SI conversion factors, as maintained by the BIPM, and all math runs in your browser so nothing is rounded away on a server. For everyday use the displayed precision is more than enough.