Centimeter to Kilometer Converter
Length · unit-converter
Convert Centimeter to Kilometer with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use SI-based definitions (international yard, nautical mile, etc.).
Calculator
From: Centimeter (cm)
To: Kilometer (km)
About Centimeter
The centimeter is a metric unit equal to one hundredth of a meter (0.01 m). It is convenient for everyday objects, paper sizes, and body measurements.
About Kilometer
The kilometer is an SI unit equal to 1,000 meters. It is the standard unit for longer distances in most countries that use the metric system.
How to convert centimeters to kilometers
1 centimeter is equal to 0.00001 kilometer:
1 cm = (0.01 m ÷ 1000 m) km = 0.00001 km
Each centimeter is defined as 0.01 m and each kilometer as 1000 m, so one cm equals 0.01 ÷ 1000 km = 0.00001 km.
Let d(cm) be the numeric value of the same length measured in Centimeter (cm), and d(km) the value in Kilometer (km). Then:
d(km) = d(cm) × (0.01 / 1000)
Equivalently, divide by how many cm fit into one km (meters per km divided by meters per cm):
d(km) = d(cm) ÷ 100000
Or: kilometer = centimeter ÷ 100000
Examples
Example #1: Convert 20 cm to kilometer
20 cm = 20 cm × (0.01/1000) km = 0.0002 km
20 cm = 20 cm ÷ 100000 = 0.0002 km
Example #2: Convert 50 cm to kilometer
50 cm = 50 cm × (0.01/1000) km = 0.0005 km
50 cm = 50 cm ÷ 100000 = 0.0005 km
Summary
To convert Centimeter to Kilometer, multiply the value in cm by the ratio of meters per cm divided by meters per km. Equivalently: value_km = value_cm × (0.01 / 1000). Numerically, 1 cm equals 0.00001 km.
Relationship context
Both units are metric (SI) and tied to the meter. Converting between them uses powers of ten (or simple rational factors), so the relationship is exact in decimal arithmetic. The factor from Centimeter to Kilometer is 1.000000e-5 (1 cm = 0.00001 km).
Conversion tables
| Centimeter (cm) | Kilometer (km) |
|---|---|
| 0.1 | 0.000001 |
| 1 | 0.00001 |
| 2 | 0.00002 |
| 3 | 0.00003 |
| 4 | 0.00004 |
| 5 | 0.00005 |
| 6 | 0.00006 |
| 7 | 0.00007 |
| 8 | 0.00008 |
| 9 | 0.00009 |
| Centimeter (cm) | Kilometer (km) |
|---|---|
| 10 | 0.0001 |
| 20 | 0.0002 |
| 30 | 0.0003 |
| 40 | 0.0004 |
| 50 | 0.0005 |
| 60 | 0.0006 |
| 70 | 0.0007 |
| 80 | 0.0008 |
| 90 | 0.0009 |
| 100 | 0.001 |
Conversions outside the hub list
The grid on the category page lists hub units only. These pairs include at least one unit outside that hub set (same tools: formulas and tables on each page).
- cm to nmiCentimeter to Nautical Mile
- cm to chainCentimeter to Chain
- cm to fathomCentimeter to Fathom
- cm to umCentimeter to Micrometer
- cm to nmCentimeter to Nanometer
- cm to angstromCentimeter to Angstrom
- cm to pmCentimeter to Picometer
- nmi to kmNautical Mile to Kilometer
- chain to kmChain to Kilometer
- fathom to kmFathom to Kilometer
- um to kmMicrometer to Kilometer
- nm to kmNanometer to Kilometer