Convert Nautical Mile to Mile
Convert nautical miles to miles instantly. 1 nautical mile = 1.150779448 mile — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Mile to Nautical Mile converter for the reverse conversion.
Units explained
Nautical Mile
A nautical mile is a unit of length equal to exactly 1,852 meters, defined as one minute of arc along any meridian of the Earth. It is the standard unit for sea and air navigation worldwide.
Originally defined as one minute of arc along a great circle of the Earth, making it convenient for celestial navigation. The International Hydrographic Organization (IHO) standardized the value at exactly 1,852 meters in 1929.
Nautical miles are used in maritime navigation, aviation, and international law (territorial waters, exclusive economic zones). Speed in nautical miles per hour is called a knot. The nautical mile is distinct from the statute (land) mile.
Defined for celestial navigation since antiquity; standardized to 1,852 m exactly by the IHO in 1929; adopted by the International Civil Aviation Organization (ICAO) for aviation use.
Mile
A mile (statute mile) is an Imperial and US customary unit of length equal to 5,280 feet or exactly 1,609.344 meters. It is the standard unit for road distances in the United States and the United Kingdom.
The mile derives from the Roman mille passus ("thousand paces" — about 1,480 meters). The English statute mile was fixed at 5,280 feet by the Weights and Measures Act of 1593, and exactly defined as 1,609.344 m by the 1959 International Yard and Pound Agreement.
Miles are used in the US and UK for road signs, speed limits (mph), athletic events (one-mile run), and geographic distances. Aviation also uses statute miles for some visibility measurements.
Roman origin (mille passus); English statute mile fixed at 5,280 feet in 1593; standardized to 1,609.344 m exactly by the 1959 International Yard and Pound Agreement.
Nautical Mile to Mile conversion formula
The relationship between nautical miles and miles:
To convert nautical miles to miles, multiply the value in nautical miles by 1.150779448. To reverse, multiply miles by 0.8689762419.
How to use this converter
Type a value into the calculator. The result in miles updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Mile to Nautical Mile converter for the reverse direction.
Step-by-step: convert nautical miles to miles
- Write down the value in nautical miles (nmi).
- Multiply that value by the factor 1.150779448.
- The product is the equivalent value in miles (mi).
- To reverse, multiply the mile value by 0.8689762419.
Worked examples
Example 1 — Convert 1 nmi to mi:
1 × 1.150779448 = 1.150779448 mi
Example 2 — Convert 100 nmi to mi:
100 × 1.150779448 = 115.0779448024 mi
Real-world example — Endurance race distances
A 50-nautical mile cycling or running race converts to a recognizable distance in miles. Endurance athletes coming from a different measurement system use this conversion to compare training plans across regions.
50 nmi × 1.150779448 = 57.5389724012 mi
Real-world example — Maritime exclusion zone
A 200-nautical mile exclusion zone (a common maritime boundary) converts to a different value in miles that's useful when describing the same zone in everyday land-distance units.
200 nmi × 1.150779448 = 230.1558896047 mi
Real-world example — Coastal cruise distances
A 10-nautical mile coastal sailing route converts to a different value in miles — useful for cruise operators who switch between maritime, aviation, and road-distance units depending on the leg of the trip.
10 nmi × 1.150779448 = 11.5077944802 mi
Nautical Mile to Mile conversion table
Standard reference values for converting nautical miles to miles:
| Nautical Mile [nmi] | Mile [mi] |
|---|---|
| 0.01 | 0.0115077945 |
| 0.1 | 0.1150779448 |
| 1 | 1.150779448 |
| 2 | 2.301558896 |
| 3 | 3.4523383441 |
| 4 | 4.6031177921 |
| 5 | 5.7538972401 |
| 10 | 11.5077944802 |
| 20 | 23.0155889605 |
| 30 | 34.5233834407 |
| 40 | 46.0311779209 |
| 50 | 57.5389724012 |
| 100 | 115.0779448024 |
| 500 | 575.3897240118 |
| 1000 | 1150.7794480235 |
Frequently asked questions
How many miles is 1 nautical mile?
How do I convert nautical miles to miles?
How do I convert miles back to nautical miles?
How many miles is 100 nautical miles?
Popular length unit conversions
Convert Nautical Mile to other length units
Show all Nautical Mile conversions
Metric / SI (7 units)
Sources & references
Conversion factor (1 nmi = 1.150779448 mi) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.