How to convert miles to nautical miles
nmi = mi × 0.8689762419Multiply the value in miles by 0.8689762419. To go the other way, multiply by 1.150779448 (or divide by 0.8689762419).
A mile is smaller than a nautical mile: it takes 1.150779448 miles to make one nautical mile.
Worked examples
- 1 mile1 mi × 0.8689762419 = 0.8689762419 nmi
- 5 miles5 mi × 0.8689762419 = 4.34488121 nmi
- 10 miles10 mi × 0.8689762419 = 8.689762419 nmi
- 20 miles20 mi × 0.8689762419 = 17.37952484 nmi
- 100 miles100 mi × 0.8689762419 = 86.89762419 nmi
Miles to nautical miles conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Miles (mi) | Nautical miles (nmi) |
|---|---|
| 0.1 mi | 0.086897624 nmi |
| 0.25 mi | 0.21724406 nmi |
| 0.5 mi | 0.43448812 nmi |
| 1 mi | 0.86897624 nmi |
| 2 mi | 1.7379525 nmi |
| 3 mi | 2.6069287 nmi |
| 4 mi | 3.475905 nmi |
| 5 mi | 4.3448812 nmi |
| 6 mi | 5.2138575 nmi |
| 7 mi | 6.0828337 nmi |
| 8 mi | 6.9518099 nmi |
| 9 mi | 7.8207862 nmi |
| 10 mi | 8.6897624 nmi |
| Miles (mi) | Nautical miles (nmi) |
|---|---|
| 12 mi | 10.427715 nmi |
| 15 mi | 13.034644 nmi |
| 20 mi | 17.379525 nmi |
| 25 mi | 21.724406 nmi |
| 30 mi | 26.069287 nmi |
| 40 mi | 34.75905 nmi |
| 50 mi | 43.448812 nmi |
| 75 mi | 65.173218 nmi |
| 100 mi | 86.897624 nmi |
| 250 mi | 217.24406 nmi |
| 500 mi | 434.48812 nmi |
| 1,000 mi | 868.97624 nmi |
About the units
Mile (mi)
The international (statute) mile equals exactly 1,609.344 m or 5,280 ft. It is the standard road-distance unit in the US and UK.
Nautical mile (nmi)
Exactly 1,852 m, originally one minute of latitude. Nautical miles are used in aviation and at sea, together with the knot (one nautical mile per hour).
Frequently asked questions
How many nautical miles are in one mile?
There are 0.8689762419 nautical miles in one mile, and this value is exact by definition.
How do I convert miles to nautical miles?
Multiply the number of miles by 0.8689762419. For example, 10 mi × 0.8689762419 = 8.689762419 nmi.
How many miles are in one nautical mile?
One nautical mile equals 1.150779448 miles. That is the reverse factor, 1 ÷ 0.8689762419.
What is 10 miles in nautical miles?
10 mi = 8.689762419 nmi.
Is this mi to nmi converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.