Convert Centimetre to Kilometre
Turn Centimetres into Kilometres in an instant. Type a value below to get an accurate cm → km result, with the formula and a quick-reference table.
1 cm = 0.00001 km
Quick answer: 1 Centimetre = 0.00001 Kilometre
Centimetre to Kilometre conversion table
| Centimetre (cm) | Kilometre (km) |
|---|---|
| 1 cm | 0.00001 km |
| 2 cm | 0.00002 km |
| 5 cm | 0.00005 km |
| 10 cm | 0.0001 km |
| 20 cm | 0.0002 km |
| 50 cm | 0.0005 km |
| 100 cm | 0.001 km |
| 500 cm | 0.005 km |
| 1,000 cm | 0.01 km |
How to convert Centimetre to Kilometre
To convert Centimetres to Kilometres, multiply the value by 0.00001.
- Take your measurement in Centimetres.
- Multiply it by 0.00001 — the number of Kilometres in one Centimetre.
- The result is the same amount, expressed in Kilometres.
To go the other way, multiply Kilometres by 100,000 — or simply divide by 0.00001.
For example, a school ruler is about 30 cm, which is 0.0003 km.
About Centimetre and Kilometre
A centimetre is one-hundredth of a metre, or 10 millimetres. It is the unit most people reach for to measure height, paper sizes and small objects in metric countries.
A kilometre is 1,000 metres, the standard metric unit for longer distances. It is used for road distances, running races and geography almost everywhere outside the United States and the United Kingdom.
Both the Centimetre and the Kilometre are metric units, so converting between them is just a change of scale: one Centimetre equals 0.00001 Kilometres, and the Kilometre is the larger unit.
Other length conversions
Frequently asked questions
How many Kilometres are in a Centimetre?
1 Centimetre equals 0.00001 Kilometre (cm → km). To convert any amount, multiply the number of Centimetres by 0.00001.
How do I convert Centimetre to Kilometre?
Enter the number of Centimetres in the converter above and read the result in Kilometres. It applies the exact cm → km factor instantly, with full precision.
Is the Centimetre to Kilometre converter free?
Yes — it is completely free and unlimited, needs no sign-up, and runs right in your browser, so it is instant and private.
Is the conversion accurate?
Yes. It uses the internationally defined length factors and full floating-point precision, then rounds the display to a clean, readable number.