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Miles to Nautical Miles (mi to nmi) Converter

1 mile (mi) = 0.868976 nautical miles (nmi). To convert miles to nautical miles, multiply by 0.868976: 26.2 mi × 0.868976 = 22.7672 nmi.

1 mi = 0.8689762419 nmi
Convert the other way: Nautical Miles to Miles

Quick facts

How to convert miles to nautical miles

  1. Take the value in miles.
  2. Multiply it by 0.868976 (the number of nautical miles in one mile).
  3. Round the result to the precision you need.
nmi = mi × 0.868976

Worked example (a marathon): 26.2 mi × 0.868976 = 22.7672 nmi.

To convert nautical miles back to miles, multiply by 1.15078, or divide by 0.868976.

Source: NIST Special Publication 811 (2008), Appendix B; the international yard and pound agreement of 1959 (1 inch = 25.4 mm exactly).

Miles to Nautical Miles conversion table

Miles to Nautical Miles conversion table
Miles [mi]Nautical Miles [nmi]
0.01 mi0.0086897624 nmi
0.1 mi0.0868976242 nmi
1 mi0.8689762419 nmi
2 mi1.7379524838 nmi
3 mi2.6069287257 nmi
5 mi4.3448812095 nmi
10 mi8.689762419 nmi
20 mi17.379524838 nmi
50 mi43.448812095 nmi
100 mi86.8976241901 nmi
1000 mi868.9762419006 nmi

mi to nmi chart from 1 to 100

Nautical Miles to Miles conversion table

Nautical Miles to Miles conversion table
Nautical Miles [nmi]Miles [mi]
0.01 nmi0.0115077945 mi
0.1 nmi0.1150779448 mi
1 nmi1.150779448 mi
2 nmi2.301558896 mi
3 nmi3.4523383441 mi
5 nmi5.7538972401 mi
10 nmi11.5077944802 mi
20 nmi23.0155889605 mi
50 nmi57.5389724012 mi
100 nmi115.0779448024 mi
1000 nmi1150.7794480235 mi

Miles vs Nautical Miles

MileNautical Mile
Symbolminmi
Equals1 mi = 0.868976 nmi1 nmi = 1.15078 mi

What is a mile?

A US customary and imperial unit equal to 5,280 feet or 1,609.344 meters. The standard road-distance unit in the US and UK.

What is a nautical mile?

Defined as exactly 1,852 meters, based on one minute of latitude along a meridian. Used in maritime and aviation navigation worldwide.

Frequently asked questions

How many nautical miles are in a mile?

There are 0.868976 nautical miles in 1 mile (1 mi = 0.8689762419 nmi).

How many miles are in a nautical mile?

There are 1.15078 miles in 1 nautical mile (1 nmi = 1.150779448 mi).

How do I convert miles to nautical miles?

Multiply the number of miles by 0.868976. For example, 10 mi × 0.868976 = 8.68976 nmi. To convert back, multiply by 1.15078.

What is 10 mi in nautical miles?

10 mi = 8.68976 nmi.

What is 100 mi in nautical miles?

100 mi = 86.8976 nmi.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST Special Publication 811 (2008), Appendix B; the international yard and pound agreement of 1959 (1 inch = 25.4 mm exactly)). Results are shown to up to 10 decimal places; round them to suit your purpose.

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Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.

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First published 28 October 2026 · Last reviewed 5 November 2026