📏 Miles to Nautical miles Converter
Convert miles (mi) to nautical miles (nmi) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 mile (mi) = 0.86897624 nautical miles (nmi). Formula: nmi = mi × 0.86897624.
Updated · Free · No sign-up · Works on any device
Miles to Nautical miles Converter inputs
Result
Miles to Nautical miles conversion table
| Miles (mi) | Nautical miles (nmi) |
|---|---|
| 0.1 mi | 0.086897624 nmi |
| 0.5 mi | 0.43448812 nmi |
| 1 mi | 0.86897624 nmi |
| 2 mi | 1.7379525 nmi |
| 3 mi | 2.6069287 nmi |
| 5 mi | 4.3448812 nmi |
| 10 mi | 8.6897624 nmi |
| 20 mi | 17.379525 nmi |
| 25 mi | 21.724406 nmi |
| 50 mi | 43.448812 nmi |
| 100 mi | 86.897624 nmi |
| 1,000 mi | 868.97624 nmi |
Other length conversions
mi to mmmi to cmmi to mmi to kmmi to inmi to ftmi to ydmi to nmi
How to convert miles to nautical miles
Multiply the number of miles by 0.86897624 to get nautical miles: nmi = mi × 0.86897624.
Example: 5 mi = 4.3448812 nmi.
The mile (mi) and the nautical mile (nmi) are both units of length. Need the opposite direction? Use the nmi to mi converter.
Popular conversions
Centimeter to InchInch to CentimeterFoot to MeterMeter to FootKilometer to MileMile to KilometerKilogram to PoundPound to KilogramCelsius to FahrenheitFahrenheit to CelsiusMilliliter to US cupUS cup to MilliliterLiter to US gallonUS gallon to LiterGram to OunceOunce to GramSquare foot to Square meterAcre to HectareKilometer per hour to Mile per hourMile per hour to Kilometer per hourMegabyte to GigabytePound per square inch to Bar
Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.
Frequently asked questions
How many nautical miles are in a mile?
1 mile = 0.86897624 nautical miles.
How do I convert miles to nautical miles?
Use the formula nmi = mi × 0.86897624. For example, 5 mi = 4.3448812 nmi.
How do I convert nautical miles back to miles?
1 nautical mile = 1.1507794 miles. Use the nmi to mi converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.