Nautical Miles to Miles
Convert nautical miles to miles instantly — one nautical mile is 1.15078 miles.
| Nautical Miles | Miles |
|---|---|
| 1 nmi | 1.150779 mi |
| 2 nmi | 2.301559 mi |
| 3 nmi | 3.452338 mi |
| 5 nmi | 5.753897 mi |
| 10 nmi | 11.507794 mi |
| 25 nmi | 28.769486 mi |
| 50 nmi | 57.538972 mi |
| 100 nmi | 115.077945 mi |
How to use
- Enter a value in the Nautical Miles field.
- The Miles figure appears immediately — no button to press.
- Typing in the Miles field converts back to Nautical Miles the same way.
- Use the reference table for the values that come up most often.
Nautical Miles to Miles formula
Converting nautical miles to miles is a single multiplication by 1.15077945.
mi = nmi × 1.15077945
Why this factor: the nautical mile and the mile are both defined against the meter, so dividing one definition by the other gives 1.15077945 directly. Both definitions are set out in full below.
To go the other way, divide by 1.15077945 — or use the Miles to Nautical Miles converter, which is the same calculation reversed.
Worked example
Given 12 nmi, multiplying by 1.15077945 yields 13.809353 mi.
12 nmi × 1.15077945 = 13.809353 mi
The converter above does this for any value you type, in either direction.
What is a nautical mile?
A nautical mile is the distance unit of sea and air navigation, chosen so it tracks latitude on a chart.
Definition: Exactly 1,852 meters, fixed by the 1929 International Extraordinary Hydrographic Conference. It approximates one arcminute of latitude.
Where it is used: Marine and aviation navigation, maritime boundaries, and the basis of the knot (one nautical mile per hour).
Worth knowing: About 15% longer than a statute mile — mixing the two is a classic navigation error.
What is a mile?
The statute mile is the standard long-distance unit in the United States and the United Kingdom.
Definition: Defined as 5,280 feet, which since the 1959 International Yard and Pound Agreement makes it exactly 1,609.344 meters.
Where it is used: US and UK road signs, speed limits, running races, and vehicle odometers.
Worth knowing: Distinct from the nautical mile (1,852 m), which is about 15% longer and used at sea and in the air.
Nautical Miles vs Miles
The nautical mile is a specialized unit while the mile is an imperial unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many miles are in a nautical mile?
One nautical mile equals 1.15077945 miles.
What is the formula to convert nautical miles to miles?
Multiply the number of nautical miles by 1.15077945. To reverse it, divide by 1.15077945 instead.
How do I convert miles back to nautical miles?
Divide by 1.15077945, which is the same as multiplying by 0.868976242.
How many miles are in 10 nautical miles?
10 nmi works out to 11.507794 mi.
Is there anything to watch out for with nautical miles?
About 15% longer than a statute mile — mixing the two is a classic navigation error.
How is the nautical mile defined?
Exactly 1,852 meters, fixed by the 1929 International Extraordinary Hydrographic Conference. It approximates one arcminute of latitude.