# Convert nautical miles to kilometers

Enter the number of nautical miles you want to convert to kilometers in the text box below. The conversion to length in kilometers will update as you type.

{"answerString":"1.852","answerSymbol":"kilometers"}## Precise decimal and fraction answers

The conversion in kilometers rounded to six significant decimal places is **1 nmi = 1.852000 km.**
The precise fraction answer is **1 ^{213}/_{250} km**.

### Decimal Precision

Conversion from one to ten decimal places

- 1 nmi =
**1.9 km** - 1 nmi =
**1.85 km** - 1 nmi =
**1.852 km** - 1 nmi =
**1.8520 km** - 1 nmi =
**1.85200 km** - 1 nmi =
**1.852000 km** - 1 nmi =
**1.8520000 km** - 1 nmi =
**1.85200000 km** - 1 nmi =
**1.852000000 km** - 1 nmi =
**1.8520000000 km**

## How many kilometers are in a nautical mile?

There are **
1.852 kilometers in one nautical mile**. A nautical mile is **
1.852 times longer** than a kilometer.
A kilometer is 54.00% of a nautical mile

## Nautical miles to kilometers conversion factor and formulas

FormulaThe conversion factor between nautical miles and kilometers is 1.852. This represents the ratio of kilometers per one nautical mile. To calculate the value in kilometers, we can either multiply by the conversion factor or divide by its inverse.

### Multiplication

To convert from nautical miles to kilometers, multiply nautical miles by 1.852.

The formula is expressed as:

*nmi × 1.852 = km*

### Division

Alternatively we can divide by the inverse conversion factor to get the same result.

The inverse of 1.852 is 1/1.852 or 0.54.
To convert from nautical miles to kilometers, divide nautical miles by 0.54.

The formula is expressed as:

*nmi ÷ 0.54 = km*

## About this conversion

Converting nautical miles to kilometers is a conversion between units from separate unit systems - nautical miles are International Hydrographic defined units while kilometers are metric (SI) .

## About Nautical miles

International Hydrographic UnitThe nautical mile is a distance measurement, usually between two geographic points. It is officially defined as being equal to 1,852 meters. The nautical mile, or international nautical mile can be found abbreviated as either M, NM, nmi or nm. Historically the nautical mile was defined as 1/16th of a degree of the earth's latitude. Given this correlation with latitude and longitude, the nautical mile has closely been associated with measurements for navigation. This tradition continues to this day as it remains the unit used to measure distance by the maritime and aviation industries. The prevalent unit of speed over water and air is the knot (nautical miles per hour).

## About Kilometers

SI UnitWithin the SI (metric) system of measurement, the kilometer is officially defined as being equal to 1,000 meters. It is commonly used as measurement for geographic distances in similar circumstances where a mile would be used in the U.S. Internationally it is spelled 'kilometre' whereas the U.S. spells it 'kilometer'. The symbol for a kilometer is km however k is sometimes used.

## Reverse this conversion

Convert from kilometers to nautical miles instead.

## 1 nautical miles to other length units

### Metric

- 1 nmi =
**1.852 km** - 1 nmi =
**1,852 m** - 1 nmi =
**18,520 dm** - 1 nmi =
**185,200 cm** - 1 nmi =
**1,852,000 mm** - 1 nmi =
**1.852×10**^{9}µ - 1 nmi =
**1.852×10**^{12}nm

### Imperial/U.S.

- 1 nmi =
**1.151 mi** - 1 nmi =
**2,025.372 yd** - 1 nmi =
**6,076.115 ft** - 1 nmi =
**72,913.386 in**

## References and Citations

- International Hydrographic Organization Resolutions of the International Hydrographic Organization
- International Bureau of Weights and Measures (BIPM) The International System of Units (SI)

## Nautical miles to kilometers conversion table

nmi | km |
---|---|

1 nmi | 1.852 km |

2 nmi | 3.704 km |

3 nmi | 5.556 km |

4 nmi | 7.408 km |

5 nmi | 9.26 km |

6 nmi | 11.112 km |

7 nmi | 12.964 km |

8 nmi | 14.816 km |

9 nmi | 16.668 km |

10 nmi | 18.52 km |

nmi | km |
---|---|

20 nmi | 37.04 km |

30 nmi | 55.56 km |

40 nmi | 74.08 km |

50 nmi | 92.6 km |

60 nmi | 111.12 km |

70 nmi | 129.64 km |

80 nmi | 148.16 km |

90 nmi | 166.68 km |

100 nmi | 185.2 km |

1,000 nmi | 1,852 km |