Nautical Miles to Miles Converter

One nautical mile equals 1.15078 statute miles. Multiply nautical miles by 1.151 to get miles. For quick mental math, add about 15%. For example, 100 nautical miles = 115 miles.

Nautical Miles

nmi

Statute Miles

Common Conversions

Key Takeaways

1 nautical mile = 1.15078 statute miles = 1.852 km.
1 nautical mile = 1 minute of latitude = 6,076 feet.
Quick estimate: add 15% to nautical miles for statute miles.
Aviation uses nautical miles for distance and knots for speed.
Speed in knots = nautical miles per hour (do not say "knots per hour").

How Do You Convert Nautical Miles to Miles?

Multiply nautical miles by 1.15078 to get statute miles. The formula is: Statute Miles = Nautical Miles x 1.15078. The conversion factor exists because a nautical mile (6,076 feet) is about 15% longer than a statute mile (5,280 feet).

Tom Brewer plans a sailing trip from Pinewood Falls marina to a harbor 45 nautical miles away. When his wife asks how far that is in regular miles, he converts: 45 x 1.151 = 51.8 miles. At his boat's cruising speed of 6 knots, the trip takes about 7.5 hours — a full day on the water.

Distance Reference Table

Nautical Miles	Statute Miles	Kilometers
1 nmi	1.15 mi	1.85 km
5 nmi	5.75 mi	9.26 km
10 nmi	11.51 mi	18.52 km
25 nmi	28.77 mi	46.30 km
50 nmi	57.54 mi	92.60 km
100 nmi	115.08 mi	185.20 km
250 nmi	287.69 mi	463.00 km
500 nmi	575.39 mi	926.00 km
1,000 nmi	1,150.78 mi	1,852 km
3,000 nmi	3,452.34 mi	5,556 km

Aviation and Maritime Uses

Flight Distance Planning

Airline routes are measured in nautical miles. A New York to London flight is about 3,000 nautical miles (3,452 statute miles). Airlines calculate fuel burn per nautical mile, and air traffic controllers assign separation distances in nautical miles. When a flight tracker shows "2,500 nmi remaining," that is 2,877 statute miles.

Maritime Navigation

Every nautical chart in the world uses nautical miles. The distance scale on the side of a chart (the latitude markings) directly measures nautical miles — one minute of latitude equals one nautical mile. Tom teaches his sailing students to measure distances by placing dividers on the chart and reading the latitude scale.

Territorial Waters

International law defines territorial waters as 12 nautical miles (13.8 statute miles) from a nation's coastline. The exclusive economic zone extends 200 nautical miles (230 statute miles) offshore. These boundaries are measured in nautical miles because they correspond directly to coordinates on navigational charts.

Frequently Asked Questions

How many miles is 1 nautical mile?

One nautical mile equals 1.15078 statute miles (1.852 kilometers). A nautical mile is based on the geometry of the Earth: it equals one minute of arc of latitude along any meridian.

How do I convert nautical miles to miles?

Multiply nautical miles by 1.15078 to get statute miles. For example, 100 nautical miles = 115.08 miles. For a quick estimate, add about 15% to the nautical mile value.

Why are nautical miles different from regular miles?

Nautical miles are based on the Earth circumference (one minute of latitude), making them ideal for navigation with charts and coordinates. Statute miles are a historical land measurement. The nautical mile links directly to degrees of latitude, simplifying position calculations at sea and in the air.

How far is 500 nautical miles?

500 nautical miles equals 575.4 statute miles (926 km). This is roughly the distance from New York to Charlotte, NC. A commercial jet covers 500 nautical miles in about 1 hour at cruising speed.

Do pilots use nautical miles or regular miles?

Pilots use nautical miles exclusively for distance measurement. All aviation charts, flight plans, and air traffic control communications use nautical miles and knots (nautical miles per hour). The only exception is visibility, which is reported in statute miles in the US.