Length conversion

Convert Inch to Kilometer

1 inch (in) equals 0.0000254 kilometer (km). Enter any value below to convert from in to km.

Enter a value and choose units. Results update instantly.

1 in = 0.0000254 km

All Length units

From 1 in
UnitValue
Meter m 0.0254
Kilometer km 0.0000254
Centimeter cm 2.54
Millimeter mm 25.4
Micrometer μm 25,400
Nanometer nm 25,399,999.9999999963
Inch in 1
Foot ft 0.0833333333
Yard yd 0.0277777778
Mile mi 0.0000157828
Nautical mile nmi 0.0000137149
Light-year ly 2.6847821184e-18
Recent conversions
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Formula

in to km conversion formula

Use this relationship for a direct conversion:

km = in x 0.0000254

Worked example

2 in = 0.0000508 km.

Metric factors and international inch, foot, yard, mile, and nautical mile definitions are exact.

Quick reference

Inch to Kilometer table

Inch (in)Kilometer (km)
0.010.000000254
0.10.00000254
10.0000254
20.0000508
50.000127
100.000254
250.000635
500.00127
1000.00254
1,0000.0254

From unit

About the inch

Exactly 25.4 millimeters by international agreement.

Symbol: in

To unit

About the kilometer

One thousand meters.

Symbol: km

Keep converting

Related conversions

Kilometer to InchReverse this conversion Inch to Meterin to mInch to Centimeterin to cmInch to Millimeterin to mmInch to Footin to ftInch to Yardin to ydInch to Milein to mi

Source

Conversion standard

Definitions are checked against NIST SP 811: Guide for the Use of the SI. Calculations use full internal precision before display rounding.

View the complete length converter

Questions

in to km FAQ

How do you convert inch to kilometer?

Use the formula km = in x 0.0000254. 1 inch (in) equals 0.0000254 kilometer (km).

Is the in to km conversion exact?

Both unit definitions use exact factors. Only the displayed decimal may be rounded.