Accuracy number of significant decimal digits

Metric Units

millimeter [mm]
centimeter [cm]
decimeter [dm]
meter [m]
kilometer [km]

Imperial and US Units

inch [in]
foot [ft]
yard [yd]
mile [mi]
league

Nautical Units

Cable
Nautical Mile [NM]
Nautical League

Astronomical Units

Astronomical Unit [au]
Light Year
Parsec [pc]

Popular Conversions (Click to convert)

Kilometer vs. Mile Example

If you want to know how many kilometers make one mile, simply type
'1' into the edit box labeled 'mile' and the edit box labeled 'kilometer'
will show you the result. On the other hand, if you type '1' in 'kilometer' box,
'mile' edit box will show you: 'how many miles make one kilometer' (edit box 'yard' shows:
'how many yards make one kilometer', 'inch' edit box shows 'how many inches make one kilometer', etc)

Fundamental unit of length in the International System Of Units (SI) is: meter (metre) [m].

Unit | in meters |
---|---|

Metric Unit System | |

millimeter [mm] | 0.001 |

centmeter [cm] | 0.01 |

decimeter [dm] | 0.1 |

meter [m] | 1 |

kilometer [km] | 1000 |

Imperial and US Unit System | |

inch [in] | 0.0254 |

foot [ft] | 0.3048 |

yard [yd] | 0.9144 |

mile [mi] | 1609.344 |

league | 4827.93696 |

Nautical Units | |

cable | 185.2 |

nautical mile [NM] | 1852 |

nautical league | 5556 |

Astronomical Units | |

astronomical unit [au] | 149.597870691e+9 |

light year [ly] | 9.4605e+15 |

parsec [pc] | 3.086e+16 |