Miles to Nautical miles formula
nautical miles = miles × 0.868976
Multiply the number of miles by 0.868976 to get nautical miles. To go the other way, multiply by 1.15078 instead, or use the nautical miles to miles converter.
Miles to Nautical miles conversion table
Common miles to nautical miles values, rounded for reading. The converter above keeps full precision.
| Miles | Nautical miles |
|---|---|
| 1 mi | 0.868976 nmi |
| 2 mi | 1.73795 nmi |
| 3 mi | 2.60693 nmi |
| 4 mi | 3.4759 nmi |
| 5 mi | 4.34488 nmi |
| 10 mi | 8.68976 nmi |
| 15 mi | 13.0346 nmi |
| 20 mi | 17.3795 nmi |
| 25 mi | 21.7244 nmi |
| 50 mi | 43.4488 nmi |
| 75 mi | 65.1732 nmi |
| 100 mi | 86.8976 nmi |
| 250 mi | 217.244 nmi |
| 500 mi | 434.488 nmi |
| 1,000 mi | 868.976 nmi |
Worked example
To convert 10 mi to nautical miles, multiply by 0.868976: the result is 8.68976 nmi. International inch, foot, yard and mile definitions are exact. One inch equals exactly 2.54 centimeters.
Frequently asked questions
How many nautical miles are in a mile?
One mile equals 0.868976 nautical miles (1 mi = 0.868976 nmi).
What is 10 miles in nautical miles?
10 mi converts to 8.68976 nmi. Enter any other value in the converter above to see it recalculated instantly.
How do I convert nautical miles back to miles?
Reverse the calculation: one nautical mile equals 1.15078 miles. You can also swap the units in the converter or open the nautical miles to miles page.
Related length conversions
Need a different pair? Open the full length converter to choose any two units.