Miles to Nautical Miles Converter
1 mile ≈ 0.868976242 nautical miles
1 mile equals 0.868976 nautical miles
How to convert miles to nautical miles
Feet, inches, yards and miles use the international foot (0.3048 m). Older US survey-foot records use a different definition; check the survey document before applying these factors.
nmi = mi × 0.8689762419One mile is 0.8689762419 nautical miles, so a single multiplication converts any value.
8.68976 nmi ≈ 10 × 0.8689762419Miles to nautical miles conversion table
Common values in miles, converted to nautical miles.
| Miles (mi) | Nautical miles (nmi) |
|---|---|
| 1 | 0.86897624 |
| 2 | 1.7379525 |
| 3 | 2.6069287 |
| 4 | 3.475905 |
| 5 | 4.3448812 |
| 10 | 8.6897624 |
| 20 | 17.379525 |
| 25 | 21.724406 |
| 50 | 43.448812 |
| 100 | 86.897624 |
| 250 | 217.24406 |
| 500 | 434.48812 |
| 1,000 | 868.97624 |
About these units
milemi
The statute mile: exactly 5,280 feet, or 1,609.344 metres.
Reference: International Yard and Pound Agreement (1959).
nautical milenmi
Exactly 1,852 metres, approximately one minute of latitude. Used in marine and air navigation.
Reference: BIPM, non-SI units accepted for use with the SI.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.