Convert Centimeters to Kilometers
cm to km · length conversion
What are centimeters and kilometers?
A centimeter is one-hundredth of a meter, roughly the width of an adult fingernail. A kilometer is 1,000 meters, the standard metric unit for road distances. For scale: a doorway is about 2 m (6.6 ft) tall, and a marathon is 42.2 km (26.2 mi).
How to convert centimeters to kilometers
1 cm = 0.00001 km. To convert, multiply the number of centimeters by 0.00001. For example, 5 cm = 0.00005 km, and 20 cm = 0.0002 km. To go the other way, multiply kilometers by 100,000 (since 1 km = 100,000 cm).
Centimeters to Kilometers conversion table
| Centimeters (cm) | Kilometers (km) |
|---|---|
| 1 | 0.00001 |
| 2 | 0.00002 |
| 5 | 0.00005 |
| 10 | 0.0001 |
| 20 | 0.0002 |
| 50 | 0.0005 |
| 100 | 0.001 |
FAQ
What is 1 cm in km?
1 cm = 0.00001 km. To convert any amount, multiply the number of centimeters by 0.00001.
How do I convert kilometers back to centimeters?
Go the other way: 1 km = 100,000 cm, so multiply kilometers by 100,000 to get centimeters.
Is a centimeter bigger than a kilometer?
No — 1 cm is the smaller unit, equal to 0.00001 km (it takes 100,000 cm to make one km).
Are these length conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.