Miles to Nautical Miles
Convert miles (mi) to nautical miles (nmi) instantly — with formula and reference table.
Quick answer: 1 mi = 0.868976 nmi. To convert miles to nautical miles, multiply by mi × 0.868976.
Converting miles to nautical miles
This converter changes a value in miles (mi) into nautical miles (nmi). One mile equals 0.868976 nmi. One statute mile equals 0.869 nautical miles. A nautical mile is longer than a land mile. The conversion runs entirely in your browser — enter a value and the result updates instantly, in either direction.
Formula
nmi = mi × 0.868976
Example
Convert 10 mi to nmi: 10 × 0.868976 = 8.689762 nmi.
Miles to Nautical Miles conversion table
| Miles (mi) | Nautical Miles (nmi) |
|---|---|
| 1 mi | 0.868976 nmi |
| 2 mi | 1.737952 nmi |
| 3 mi | 2.606929 nmi |
| 5 mi | 4.344881 nmi |
| 10 mi | 8.689762 nmi |
| 20 mi | 17.379525 nmi |
| 25 mi | 21.724406 nmi |
| 50 mi | 43.448812 nmi |
| 100 mi | 86.897624 nmi |
Popular miles to nautical miles conversions
Quick answers for the mi values people look up most often:
- 4 mi = 3.4759 nmi
- 6 mi = 5.2139 nmi
- 7 mi = 6.0828 nmi
- 8 mi = 6.9518 nmi
- 9 mi = 7.8208 nmi
- 12 mi = 10.4277 nmi
- 15 mi = 13.0346 nmi
- 30 mi = 26.0693 nmi
- 40 mi = 34.759 nmi
- 60 mi = 52.1386 nmi
- 75 mi = 65.1732 nmi
- 80 mi = 69.5181 nmi
- 90 mi = 78.2079 nmi
- 150 mi = 130.3464 nmi
- 200 mi = 173.7952 nmi
- 250 mi = 217.2441 nmi
- 500 mi = 434.4881 nmi
- 1000 mi = 868.9762 nmi
How to use this converter
- Enter a value in the miles (mi) field.
- Read the converted value in nautical miles (nmi) below.
- Type into the nmi field instead to convert in reverse, or use the swap button.
Frequently asked questions
How many nautical miles is one mile?
1 statute mile equals 0.869 nautical miles.
How do I convert 100 miles to nautical miles?
100 times 0.869 = 86.9 nautical miles.
Which is longer, a mile or a nautical mile?
A nautical mile (1.852 km) is about 15 percent longer than a statute mile (1.609 km).