Convert Inch to Kilometer

One in equals 0.0000254 km. This converter allows you to easily convert between Inch and Kilometer in real time.

Formula

in × 0.0000254 = km

Example: 1 in = 0.0000254 km

What is Inch?

The inch is a unit of length in the imperial and US customary systems, defined as exactly 25.4 millimeters. The word comes from the Latin "uncia," meaning one-twelfth, as there are 12 inches in a foot. Screen sizes for televisions, monitors, and smartphones are universally measured diagonally in inches. In plumbing and hardware, pipe diameters and bolt sizes are often specified in inches, even in countries that otherwise use the metric system.

What is Kilometer?

The kilometer is equal to 1,000 meters and is the standard unit for expressing distances between cities, road signs, and geographic measurements in most countries. It was introduced as part of the metric system during the French Revolution. A marathon race covers 42.195 kilometers, and most countries outside the United States use kilometers for speed limits and road distances. In scientific contexts, it is used for planetary distances and the sizes of geographic features.