# Nautical mile

A **nautical mile** is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters.[2][3] Historically, it was defined as the meridian arc length corresponding to one minute (1/60 of a degree) of latitude. Today the international nautical mile is defined as exactly 1,852 metres (6,076 ft; 1.151 mi).[4] The derived unit of speed is the knot, one nautical mile per hour.

Nautical mile | |
---|---|

Unit of | length |

Symbol | M, NM,[lower-alpha 1] or nmi |

Conversions | |

1 M, NM,[lower-alpha 2] or nmi in ... | ... is equal to ... |

metre | 1,852[1] |

foot | ≈6,076 |

statute mile | ≈1.151 |

cable | 10 |