Kilometers to centimeters
Type a value in kilometers to see it in centimeters straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the kilometers box.
- Read the result in centimeters as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
cm = km × 100,000
Multiply the value in kilometers by 100,000 to get centimeters.
Example
To convert 25 km to centimeters: 25 × 100,000 = 2,500,000 cm.
Conversion table
| Kilometers (km) | Centimeters (cm) |
|---|---|
| 1 | 100,000 |
| 2 | 200,000 |
| 3 | 300,000 |
| 5 | 500,000 |
| 10 | 1,000,000 |
| 20 | 2,000,000 |
| 25 | 2,500,000 |
| 50 | 5,000,000 |
| 100 | 10,000,000 |
| 250 | 25,000,000 |
| 500 | 50,000,000 |
| 1,000 | 100,000,000 |
About the units
- Kilometer
- A kilometer is exactly 1000 meters and is the usual unit for road and travel distances.
- Centimeter
- A centimeter is one hundredth of a meter, used for everyday sizes such as height and clothing.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many centimeters are in one kilometer?
1 km = 100,000 cm exactly.
How do I convert kilometers to centimeters?
Use cm = km × 100,000. For example, 25 km = 2,500,000 cm.
How many kilometers are in one centimeter?
1 cm = 0.00001 km.
Are the inch, foot and mile factors exact or rounded?
They are exact by definition. Since the 1959 agreement one inch is exactly 2.54 cm, one foot 0.3048 m and one mile 1609.344 m.
What is the difference between a mile and a nautical mile?
A statute mile is 1609.344 meters and is used on roads. A nautical mile is 1852 meters and is used at sea and in aviation.