Convert Mile to Nautical Mile
Use this free converter to change miles (mi) into nautical miles (nmi). Mile and nautical mile both measure length. As a quick reference, 1 mi equals 0.86897624 nmi, and 1 nmi equals 1.1507794 mi.
Free · runs in your browser · no sign-up
Nautical Mile (nmi)
0.86897624
1 mi = 0.86897624 nmi
Length conversion table
| Mile | Nautical Mile |
|---|---|
| 0.01 | 0.0086897624 |
| 0.1 | 0.086897624 |
| 0.5 | 0.43448812 |
| 1 | 0.86897624 |
| 2 | 1.7379525 |
| 3 | 2.6069287 |
| 5 | 4.3448812 |
| 10 | 8.6897624 |
| 20 | 17.379525 |
| 25 | 21.724406 |
| 50 | 43.448812 |
| 100 | 86.897624 |
| 1,000 | 868.97624 |
How to convert Mile to Nautical Mile
Multiply the mile value by 0.86897624 to get nautical miles.
- Enter the number of miles you want to convert.
- The converter instantly shows the equivalent value in nautical miles.
- Worked example: 15 mi × 0.86897624 = 13.034644 nmi.
- Use the swap button to reverse the conversion (nautical mile to mile).
About these units
Mile (mi)
- Definition
- A mile (mi) is an imperial unit of length equal to exactly 1,609.344 meters, or 5,280 feet.
- History
- It descends from the Roman "mille passus" (a thousand paces) and was standardised in England in 1593 as the statute mile.
- Current use
- Miles remain the everyday unit for road distance and speed in the United States and United Kingdom.
Nautical Mile (nmi)
- Definition
- A nautical mile (nmi) equals exactly 1,852 meters and corresponds to one minute of latitude along a meridian.
- History
- It was defined by its relationship to the Earth’s circumference and standardised internationally in 1929.
- Current use
- Nautical miles are used in marine and air navigation; one knot equals one nautical mile per hour.
Frequently asked questions
How many nautical miles are in a mile?
There are 0.86897624 nmi in 1 mi. To convert, multiply the number of miles by 0.86897624.
How do I convert miles to nautical miles?
Multiply the mile value by 0.86897624 to get nautical miles. For example, 10 mi = 8.6897624 nmi.
Is this mile-to-nautical mile converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Mile to other length units
| Unit | 1 Mile equals |
|---|---|
| Meter (m) | 1609.344 m |
| Kilometer (km) | 1.609344 km |
| Centimeter (cm) | 160934.4 cm |
| Millimeter (mm) | 1609344 mm |
| Micrometer (µm) | 1609344000 µm |
| Nanometer (nm) | 1.6093e+12 nm |
| Yard (yd) | 1760 yd |
| Foot (ft) | 5280 ft |
| Inch (in) | 63360 in |
| Nautical Mile (nmi) | 0.86897624 nmi |
| Light Year (ly) | 1.7011e-13 ly |