Kilometers to Inches Conversion (km to in)

Kilometers to Inches Converter

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

Result in Inches:

1 km = 39,370.07874 in
1 km ≈ 39,370 ⁵/₆₄"
*inch fraction is rounded to nearest 1/64"

How to Convert Kilometers to Inches

To convert a measurement in kilometers to a measurement in inches, multiply the length by the following conversion ratio: 39,370.07874 inches/kilometer.

Since one kilometer is equal to 39,370.07874 inches, you can use this simple formula to convert:

inches = kilometers × 39,370.07874

The length in inches is equal to the length in kilometers multiplied by 39,370.07874.

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

inches = (5 km × 39,370.07874) = 196,850.393701"

How Many Inches Are in a Kilometer?

There are 39,370.07874 inches in a kilometer, which is why we use this value in the formula above.

1 km = 39,370.07874"

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

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

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.^[1] 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 10³. Kilometers can be abbreviated as km; for example, 1 kilometer can be written as 1 km.

Learn more about kilometers.

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.^[2]

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″.

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

Kilometer to Inch Conversion Table

Table showing various kilometer measurements converted to inches.
Kilometers	Inches
0.0001 km	3.937"
0.0002 km	7.874"
0.0003 km	11.81"
0.0004 km	15.75"
0.0005 km	19.69"
0.0006 km	23.62"
0.0007 km	27.56"
0.0008 km	31.5"
0.0009 km	35.43"
0.001 km	39.37"
0.002 km	78.74"
0.003 km	118.11"
0.004 km	157.48"
0.005 km	196.85"
0.006 km	236.22"
0.007 km	275.59"
0.008 km	314.96"
0.009 km	354.33"
0.01 km	393.7"
0.02 km	787.4"
0.03 km	1,181"
0.04 km	1,575"
0.05 km	1,969"
0.06 km	2,362"
0.07 km	2,756"
0.08 km	3,150"
0.09 km	3,543"
0.1 km	3,937"
0.2 km	7,874"
0.3 km	11,811"
0.4 km	15,748"
0.5 km	19,685"
0.6 km	23,622"
0.7 km	27,559"
0.8 km	31,496"
0.9 km	35,433"
1 km	39,370"

Table showing various kilometer measurements converted to inches.

Kilometers

Inches

0.0001 km

3.937"

0.0002 km

7.874"

0.0003 km

11.81"

0.0004 km

15.75"

0.0005 km

19.69"

0.0006 km

23.62"

0.0007 km

27.56"

0.0008 km

31.5"

0.0009 km

35.43"

0.001 km

39.37"

0.002 km

78.74"

0.003 km

118.11"

0.004 km

157.48"

0.005 km

196.85"

0.006 km

236.22"

0.007 km

275.59"

0.008 km

314.96"

0.009 km

354.33"

0.01 km

393.7"

0.02 km

787.4"

0.03 km

1,181"

0.04 km

1,575"

0.05 km

1,969"

0.06 km

2,362"

0.07 km

2,756"

0.08 km

3,150"

0.09 km

3,543"

0.1 km

3,937"

0.2 km

7,874"

0.3 km

11,811"

0.4 km

15,748"

0.5 km

19,685"

0.6 km

23,622"

0.7 km

27,559"

0.8 km

31,496"

0.9 km

35,433"

1 km

39,370"

References

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
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