---
title: "Miles to Nautical miles — mi to nmi converter"
description: "1 mile = 0.86898 nautical miles. Convert miles to nautical miles with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/miles-to-nautical-miles/
site: "At One Place"
---

# Miles to nautical miles

**1 mile in nautical miles: 1 mi = 0.86898 nmi**

nmi = mi × 0.8689762419

To convert miles to nautical miles, multiply by 0.8689762419. The table below gives the values people look up most often, and the converter works for any number.

## Miles to nautical miles table

*Common mile values converted to nautical miles.*

| Miles | Nautical miles |
| --- | --- |
| 1 mi | 0.86898 |
| 2 mi | 1.737952 |
| 3 mi | 2.606929 |
| 4 mi | 3.475905 |
| 5 mi | 4.344881 |
| 10 mi | 8.689762 |
| 15 mi | 13.03464 |
| 20 mi | 17.37952 |
| 25 mi | 21.72441 |
| 30 mi | 26.06929 |
| 40 mi | 34.75905 |
| 50 mi | 43.44881 |
| 75 mi | 65.17322 |
| 100 mi | 86.89762 |
| 250 mi | 217.2441 |
| 500 mi | 434.4881 |
| 1,000 mi | 868.9762 |

## How the conversion works

The relationship is nmi = mi × 0.8689762419. Both units measure length, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

## Common questions

### How many nautical miles are in one mile?

One mile equals 0.86898 nautical miles. nmi = mi × 0.8689762419.

### How do you convert miles to nautical miles?

Use nmi = mi × 0.8689762419. So 10 mi is 8.689762 nmi.

### How many miles are in one nautical mile?

One nautical mile equals 1.150779 miles, which is the reverse of the conversion above.

## Related pages

- [Nautical miles to Miles](https://atoneplace.net/convert/nautical-miles-to-miles/)
- [Miles to Meters](https://atoneplace.net/convert/miles-to-meters/)
- [Miles to Kilometers](https://atoneplace.net/convert/miles-to-km/)
- [Miles to Centimeters](https://atoneplace.net/convert/miles-to-cm/)
- [Miles to Millimeters](https://atoneplace.net/convert/miles-to-mm/)
- [Miles to Yards](https://atoneplace.net/convert/miles-to-yards/)
- [Miles to Feet](https://atoneplace.net/convert/miles-to-feet/)
- [Miles to Inches](https://atoneplace.net/convert/miles-to-inches/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)