Convert Inches to Kilometers

Enter your inch value in the form below to get the value calculated in kilometers.

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1 in = 2.54E-5 km

How to Convert Inches to Kilometers Using an Easy Conversion Formula

Tape measures can be used to measure units of length, and a calculator can be used to convert to another unit

Convert inches to kilometers with this simple formula:

kilometers = inches × 2.54E-5

Converting an inch length measurement to a kilometer measurement involves multiplying your length by the conversion ratio to find the result. An inch is equal to 2.54E-5 kilometers, so to convert simply multiply by 2.54E-5.

For example:
5" = (5 × 2.54E-5) = 0.000127 km

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

Inches and kilometers are both units used to measure length. Learn more about length and find more length measurement conversion calculators. An inch is an imperial measurement and can be abbreviated as in, for example 1 in. A kilometer is a metric measurement and can be abbreviated as km, for example 1 km. Learn more about the metric system, including the common unit prefixes and how to convert between metric units.

The actual length of an inch has varied because of variances of the length of a foot. Throughout history it has been equal to 1/12 - 1/16 of a foot, but there are now exactly 12 inches in a foot. In 1959 the world agreed to the exact length of the national yard, .9144 meters. As such a foot is equal to .3048 meters and an inch is equal to 2.54 centimeters.

A quarter is .955" in diameter, which is just smaller than 1"

The standard ruler has 12", and metric combinations have 30 cm. Inches are also often measured using tape measures which commonly come in lengths from 6' - 35'. Other types of measuring devices include scales, calipers, measuring wheels, micrometers, yardsticks, and even lasers.

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 combination with both values, so make sure you get the correct type for your needs. If you need a ruler you can also download and print our free printable rulers which include both imperial and metric measurements.

inches and kilometers are units used to measure length
Convert Kilometers to Inches

Inch Measurements and Equivalent Kilometer Conversions

Common inch values converted to the equivalent kilometer value
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
11" 0.000279 km
12" 0.000305 km
13" 0.00033 km
14" 0.000356 km
15" 0.000381 km
16" 0.000406 km
17" 0.000432 km
18" 0.000457 km
19" 0.000483 km
20" 0.000508 km
21" 0.000533 km
22" 0.000559 km
23" 0.000584 km
24" 0.00061 km
25" 0.000635 km
26" 0.00066 km
27" 0.000686 km
28" 0.000711 km
29" 0.000737 km
30" 0.000762 km
31" 0.000787 km
32" 0.000813 km
33" 0.000838 km
34" 0.000864 km
35" 0.000889 km
36" 0.000914 km
37" 0.00094 km
38" 0.000965 km
39" 0.000991 km
40" 0.001016 km

More Length Conversions

Convert to Miles Length
1" is equal to 1.5783E-5 miles
Convert to Yards Length
1" is equal to 0.027778 yards
Convert to Feet Length
1" is equal to 0.083333 feet
Convert to Meters Length
1" is equal to 0.0254 meters
Convert to Centimeters Length
1" is equal to 2.54 centimeters
Convert to Millimeters Length
1" is equal to 25.4 millimeters
Convert to Micrometers Length
1" is equal to 25,400 micrometers
Convert to Nanometers Length
1" is equal to 25,400,000 nanometers