# Inches to Kilometers Converter

Enter the length in inches below to get the value converted to kilometers.

**Results in Kilometers:**

Do you want to convert kilometers to inches?

## How to Convert Inches to Kilometers

To convert a measurement in inches to a measurement in kilometers, multiply the length by the following conversion ratio: 2.54E-5 kilometers/inch.

Since one inch is equal to 2.54E-5 kilometers, you can use this simple formula to convert:

The length in kilometers is equal to the length in inches multiplied by 2.54E-5.

**For example,**here's how to convert 50,000 inches to kilometers using the formula above.

Our inch fraction calculator can add inches and kilometers together, and it also automatically converts the results to US customary, imperial, and SI metric values.

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

## What is an Inch?

An inch is a unit of length equal to ^{1}/_{12} of a foot or ^{1}/_{36} of a yard.
Because the international yard is legally defined to be equal to exactly 0.9144 meters, one inch is equal to 2.54 centimeters.^{[1]}

The inch is a US customary and imperial unit of length. Inches can be abbreviated as *in*; for example, 1 inch can be written as 1 in.

Inches can also be denoted using the *″* symbol, otherwise known as a double-prime.
Often a double-quote (") is used instead of a double-prime for convenience.
A double-prime is commonly used to express *1 in* as 1″.

The standard ruler is 12 inches long and is a common tool for measuring a length in inches. Another frequently used tool to perform measurements in inches is a tape measure, which commonly comes in lengths from 6' - 35'. Other types of devices used to make measurements in inches include scales, calipers, measuring wheels, micrometers, yardsticks, and even lasers.

Learn more about inches.

## What is a Kilometer?

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

We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or a combination of both values, so make sure you get the correct type for your needs.

Need a ruler? Try our free downloadable and printable rulers, which include both imperial and metric measurements.

## Inch to Kilometer Conversion Table

Inches | Kilometers |
---|---|

1" | 0.0000254 km |

2" | 0.0000508 km |

3" | 0.0000762 km |

4" | 0.000102 km |

5" | 0.000127 km |

6" | 0.000152 km |

7" | 0.000178 km |

8" | 0.000203 km |

9" | 0.000229 km |

10" | 0.000254 km |

100" | 0.00254 km |

1,000" | 0.0254 km |

10,000" | 0.254 km |

100,000" | 2.54 km |

## References

- National Institute of Standards and Technology, Checking the Net Contents of Packaged Goods, Handbook 133 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.133-2019.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 Inch & Kilometer Conversions

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