Convert miles to nautical miles
1 mi = 0.86897624 nmi. Change the amount below, or read the formula and the reference table further down.
1 mile equals
nautical miles
1 mi = 0.86897624 nmi
The formula
Miles and nautical miles both measure length from the same zero, so a single multiplier does the job.
nmi = mi × 0.8689762419
Going the other way? Convert nautical miles to miles.
Miles to nautical miles table
Common values, rounded for reading.
| Miles (mi) | Nautical miles (nmi) |
|---|---|
| 1 | 0.868976 |
| 2 | 1.738 |
| 3 | 2.6069 |
| 4 | 3.4759 |
| 5 | 4.3449 |
| 6 | 5.2139 |
| 7 | 6.0828 |
| 8 | 6.9518 |
| 9 | 7.8208 |
| 10 | 8.6898 |
| 15 | 13.0346 |
| 20 | 17.3795 |
| 25 | 21.7244 |
| 30 | 26.0693 |
| 40 | 34.759 |
| 50 | 43.4488 |
| 75 | 65.1732 |
| 100 | 86.8976 |
| 250 | 217.24 |
| 500 | 434.49 |
| 1,000 | 868.98 |
Questions people ask
- How many nautical miles are in a mile?
- One mile equals 0.8689762419 nautical miles.
- How do I convert miles to nautical miles by hand?
- Multiply the number of miles by 0.8689762419. For a rough check, 0.869 is close enough for most everyday use.
- What is 1 mile in nautical miles?
- 1 mile is 0.86897624 nautical miles.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.