Online calculators to convert miles to kilometers (mi to km) and kilometers to miles (km to mi) with additional formulas, examples, and conversion tables. Our conversions provide a quick and easy way to convert between these units.

Enter your value in one of the conversion calculators below to **convert miles to km ** or **convert km to miles**.

Let's take a closer look at the conversion formulas so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.

The formula to convert from miles to km is:

km = mi x 1.609344

The formula to convert from km to miles is:

mi = km x 0.621371192

Next, let's look at some examples showing the work and calculations that are involved in converting between miles (mi) and kilometers (km).

Task: Convert 5 miles to kilometers (show work)Formula:mi x 1.609344 = kmCalculations:5 mi x 1.609344 = 8.04672 kmResult:5 mi is equal to 8.04672 km

Task: Convert 15 kilometers to miles (show work)Formula:km x 0.621371192 = miCalculations:15 km x 0.621371192 = 9.32056788 miResult:15 km is equal to 9.32056788 mi

For quick reference purposes, below are conversion tables that you can use to convert from miles to km, and km to miles.

miles (mi) | kilometers (km) |
---|---|

1 mi | 1.609344 km |

2 mi | 3.218688 km |

3 mi | 4.828032 km |

4 mi | 6.437376 km |

5 mi | 8.04672 km |

6 mi | 9.656064 km |

7 mi | 11.265408 km |

8 mi | 12.874752 km |

9 mi | 14.484096 km |

10 mi | 16.09344 km |

20 mi | 32.18688 km |

30 mi | 48.28032 km |

40 mi | 64.37376 km |

50 mi | 80.4672 km |

75 mi | 120.7008 km |

100 mi | 160.9344 km |

250 mi | 402.336 km |

500 mi | 804.672 km |

750 mi | 1,207.008 km |

1,000 mi | 1,609.344 km |

kilometers (km) | miles (mi) |
---|---|

1 km | 0.621371192 mi |

2 km | 1.242742384 mi |

3 km | 1.864113576 mi |

4 km | 2.485484768 mi |

5 km | 3.10685596 mi |

6 km | 3.728227152 mi |

7 km | 4.349598344 mi |

8 km | 4.970969536 mi |

9 km | 5.592340728 mi |

10 km | 6.21371192 mi |

20 km | 12.42742384 mi |

30 km | 18.64113576 mi |

40 km | 24.85484768 mi |

50 km | 31.0685596 mi |

75 km | 46.6028394 mi |

100 km | 62.1371192 mi |

250 km | 155.342798 mi |

500 km | 310.685596 mi |

750 km | 466.028394 mi |

1,000 km | 621.371192 mi |

The following is a list of definitions relating to conversions between miles and kilometers.

A mile is a unit of length in both US Customary Units as well as the Imperial System. The symbol for mile is mi. There are 1,760 yards in a mile or 5,280 feet in a mile.

A kilometer is a unit of length in the Metric System. The symbol for kilometer is km. There are 1,000 meters in a kilometer. The International spelling is kilometre.

There are 0.621371192 miles in a kilometer.

There are 1.609344 kilometers in a mile.

This table provides a summary of the Length units within their respective measurement systems.

Unit | Symbol | Measurement System | Description |
---|---|---|---|

inches | in or " | US Customary Units/Imperial System | |

feet | ft or ' | US Customary Units/Imperial System | 1 foot = 12 inches |

yards | yd | US Customary Units/Imperial System | 1 yard = 3 feet |

miles | mi | US Customary Units/Imperial System | 1 mile = 1760 yards or 5280 feet |

millimeter | mm | Metric System | 1000 mm = 1 m |

centimeter | cm | Metric System | 100 cm = 1 m, 1 cm = 10 mm |

decimeter | dm | Metric System | 10 dm = 1 m, 1 dm = 10 cm |

meter | m | Metric System | 1 m = 1000 mm, 100 cm, 10 dm |

kilometer | km | Metric System | 1 km = 1000 m |

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