Convert Kilometers to Centimeters
km to cm · length conversion
What are kilometers and centimeters?
A kilometer is 1,000 meters, the standard metric unit for road distances. A centimeter is one-hundredth of a meter, roughly the width of an adult fingernail. 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 kilometers to centimeters
1 km = 100,000 cm. To convert, multiply the number of kilometers by 100,000. For example, 5 km = 500,000 cm, and 20 km = 2,000,000 cm. To go the other way, multiply centimeters by 0.00001 (since 1 cm = 0.00001 km).
Kilometers to Centimeters conversion table
| Kilometers (km) | Centimeters (cm) |
|---|---|
| 1 | 100,000 |
| 2 | 200,000 |
| 5 | 500,000 |
| 10 | 1,000,000 |
| 20 | 2,000,000 |
| 50 | 5,000,000 |
| 100 | 10,000,000 |
FAQ
What is 1 km in cm?
1 km = 100,000 cm. To convert any amount, multiply the number of kilometers by 100,000.
How do I convert centimeters back to kilometers?
Go the other way: 1 cm = 0.00001 km, so multiply centimeters by 0.00001 to get kilometers.
Is a kilometer bigger than a centimeter?
Yes — 1 km is the larger unit, equal to 100,000 cm.
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.