Inch to Kilometer Converter
Type a value — the answer appears instantly. 1 in = 0.0000254 km.
Reviewed by the OmniCalc teamMethod verified 2026-07-01
0.0000254 kilometers
= 0.0254 m= 0.0833333 ft
equals 0.0000254 kilometersFormula: km = in × 0.0000254
Inch to Kilometer formula
km = in × 0.0000254
Convert 5 inches to kilometers
- Start with 5 inches.
- Multiply by the conversion factor: 5 × 0.0000254 = 0.000127.
- So 5 in = 0.000127 km.
Inch to Kilometer conversion table
| Inches (in) | Kilometers (km) |
|---|---|
| 0.01 in | 0.000000254 km |
| 0.1 in | 0.00000254 km |
| 0.25 in | 0.00000635 km |
| 0.5 in | 0.0000127 km |
| 1 in | 0.0000254 km |
| 2 in | 0.0000508 km |
| 3 in | 0.0000762 km |
| 4 in | 0.0001016 km |
| 5 in | 0.000127 km |
| 6 in | 0.0001524 km |
| 7 in | 0.0001778 km |
| 8 in | 0.0002032 km |
| 9 in | 0.0002286 km |
| 10 in | 0.000254 km |
| 15 in | 0.000381 km |
| 20 in | 0.000508 km |
| 25 in | 0.000635 km |
| 30 in | 0.000762 km |
| 40 in | 0.001016 km |
| 50 in | 0.00127 km |
| 75 in | 0.001905 km |
| 100 in | 0.00254 km |
| 250 in | 0.00635 km |
| 500 in | 0.0127 km |
| 1,000 in | 0.0254 km |
| 5,000 in | 0.127 km |
| 10,000 in | 0.254 km |
Unit definitions
What is a inch?
The inch is an imperial and US customary length unit defined as exactly 0.0254 metres since 1959. It is widely used in the United States and for screen sizes, pipe diameters, and lumber. Twelve inches make one foot.
What is a kilometer?
The kilometre is one thousand metres, the metric unit for measuring road distances, running events, and geography in most countries. Road signs, car odometers, and marathons (42.195 km) are all expressed in kilometres. One kilometre is about 0.621 miles.
Frequently asked questions
How many kilometers are in one inch?
One inch equals 0.0000254 kilometers (1 in = 0.0000254 km).
How do I convert inches to kilometers?
Multiply the value in inches by 0.0000254. For example, 10 in × 0.0000254 = 0.000254 km.
Which is bigger — a inch or a kilometer?
A kilometer is bigger: one kilometer contains 39,370.1 inches.
Is this inch to kilometer converter free?
Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.
Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.