# Miles To Km Converter (Miles To Kilometers)

Enter the length in miles below to convert it to kilometers.

## Result in Kilometers:

Do you want to convert kilometers to miles?

## How to Convert Miles to Kilometers

The fastest way to convert miles to km (kilometers) is to use this simple formula:

kilometers = miles × 1.609344

The distance in kilometers is equal to the distance in miles multiplied by 1.609344.
Since one mile is equal to 1.609344 kilometers^{[1]}, that's the conversion ratio used in the formula.

**For example,** here's how to convert 5 miles to kilometers using the formula above.

kilometers = (5 mi × 1.609344) = 8.04672 km

### How Many Kilometers Are in a Mile?

There are **1.609344** kilometers in a mile, which is why we use this value in the formula above.

1 mi = 1.609344 km

## How to Convert Miles to Kilometers Without a Calculator

Multiplying by the conversion ratio of 1.609344 might be quick using a calculator, but what if you want to convert miles to kilometers without one?

While it's not nearly as accurate, there's actually a pretty easy method for converting in your head that will get you close.

multiply miles by 1 (50 x 1 = 1) multiply miles by .6 (50 x .6 = 5 x 6 = 30) add them together (50 + 30 = 80 mi) Follow these three steps to convert miles to kilometers:

- Multiply miles by 1
- Multiply miles by .6
- Add these two values together

**For example,** here's how to convert 50 miles to kilometers using this method.

- 50 mi × 1 = 50
- 50 mi × .6 = 5 × 6 = 30
- 50 + 30 = 80 km

The result of 80 km is pretty close to the actual value of 80.4672 and could be done pretty quickly. Bottom line, if you need precision, use the calculator above, but this method will save you some time!

Miles and kilometers are both units used to measure distance or length. Keep reading to learn more about each unit of measure.

## What Is a Mile?

The mile is a linear measurement of distance equal to exactly 1,609.344 meters or 1.60934 kilometers. One mile is also equal to 5,280 feet or 1,760 yards.

The mile is a US customary and imperial unit of length. Miles can be abbreviated as *mi*, and are also sometimes abbreviated as *m*. For example, 1 mile can be written as 1 mi or 1 m.

Learn more about miles.

## What Is a Kilometer?

One kilometer is equal to 1,000 meters, which are defined as the distance light travels in a vacuum in ^{1}/_{299,792,458} of a second.^{[2]} One kilometer is equal to 0.621371 miles.

The kilometer, or kilometre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "kilo" is the prefix for thousands, or 10^{3}. Kilometers can be abbreviated as *km*; for example, 1 kilometer can be written as 1 km.

Learn more about kilometers.

## Mile to Kilometer Conversion Table

Miles | Kilometers |
---|---|

1 mi | 1.6093 km |

2 mi | 3.2187 km |

3 mi | 4.828 km |

4 mi | 6.4374 km |

5 mi | 8.0467 km |

6 mi | 9.6561 km |

7 mi | 11.27 km |

8 mi | 12.87 km |

9 mi | 14.48 km |

10 mi | 16.09 km |

11 mi | 17.7 km |

12 mi | 19.31 km |

13 mi | 20.92 km |

14 mi | 22.53 km |

15 mi | 24.14 km |

16 mi | 25.75 km |

17 mi | 27.36 km |

18 mi | 28.97 km |

19 mi | 30.58 km |

20 mi | 32.19 km |

21 mi | 33.8 km |

22 mi | 35.41 km |

23 mi | 37.01 km |

24 mi | 38.62 km |

25 mi | 40.23 km |

26 mi | 41.84 km |

27 mi | 43.45 km |

28 mi | 45.06 km |

29 mi | 46.67 km |

30 mi | 48.28 km |

31 mi | 49.89 km |

32 mi | 51.5 km |

33 mi | 53.11 km |

34 mi | 54.72 km |

35 mi | 56.33 km |

36 mi | 57.94 km |

37 mi | 59.55 km |

38 mi | 61.16 km |

39 mi | 62.76 km |

40 mi | 64.37 km |

## References

- Kenneth Butcher, Linda Crown, & Elizabeth J. Gentry, The International System of Units (SI) – Conversion Factors for General Use,
*National Institute of Standards and Technology*, https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication1038.pdf - Ambler Thompson and Barry N. Taylor, Guide for the Use of the International System of Units (SI),
*National Institute of Standards and Technology*, https://physics.nist.gov/cuu/pdf/sp811.pdf

## More Mile & Kilometer Conversions

- miles to yards
- miles to feet
- miles to inches
- miles to meters
- miles to centimeters
- miles to millimeters
- miles to micrometers
- miles to nanometers
- yards to kilometers
- feet to kilometers
- inches to kilometers
- meters to kilometers
- centimeters to kilometers
- millimeters to kilometers
- micrometers to kilometers
- nanometers to kilometers