Convert centimeters to kilometers
Converting centimeters to kilometers is a common length task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 cm equals 0.00001 km, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert centimeters to kilometers
To convert centimeters to kilometers, multiply the number of centimeters by 0.00001. For example, 10 cm × 0.00001 = 0.0001 km.
km = cm × 0.00001
- Write down the value in centimeters you want to convert.
- Multiply it by 0.00001 (the exact cm→km factor).
- The result is your value in kilometers. Check it below with the converter or the table.
Conversion table
Common values of centimeters and their equivalents in kilometers:
| cm | km |
|---|---|
| 1 | 0.00001 |
| 2 | 0.00002 |
| 3 | 0.00003 |
| 4 | 0.00004 |
| 5 | 0.00005 |
| 10 | 0.0001 |
| 20 | 0.0002 |
| 25 | 0.00025 |
| 50 | 0.0005 |
| 100 | 0.001 |
| 250 | 0.0025 |
| 500 | 0.005 |
About these units
Centimeter (cm). A centimeter is one hundredth of a meter, roughly the width of a fingernail. It is the everyday unit for body measurements, clothing sizes and small objects in metric countries.
Kilometer (km). A kilometer equals 1,000 meters and is the standard metric unit for road distances and geography. One kilometer is about 0.62 miles or a 12-minute walk.
Frequently asked questions
How do I convert centimeters to kilometers?
To convert centimeters to kilometers, multiply the number of centimeters by 0.00001. For example, 10 cm × 0.00001 = 0.0001 km. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many kilometers are in 1 centimeter?
1 cm = 0.00001 km. That is the fixed relationship used by this converter and by international standards.
How many centimeters are in 1 kilometer?
1 km = 100,000 cm. If you are converting in the opposite direction, use our Kilometer to Centimeter converter for the dedicated table and FAQ.
Is the centimeters to kilometers conversion exact?
Yes. Both units are defined by international agreement, so the factor of 0.00001 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is centimeter used for?
A centimeter is one hundredth of a meter, roughly the width of a fingernail. It is the everyday unit for body measurements, clothing sizes and small objects in metric countries.