Convert Centimeters to Kilometers
1 centimeter (cm) equals 0.00001 kilometers (km).
1 cm = 0.00001 km
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk centimeter to kilometer converter to paste a column from Excel.
How to Convert Centimeter to Kilometer
- 1 cm = 0.00001 km
- 1 km = 100000 cm
- Example: convert 15 cm to km: 15 cm = 15 × 0.00001 km = 0.00015 km
Formula
km = cm ÷ 100000
Derivation from SI units:
- 1 cm = 10⁻² m
- 1 km = 10³ m
- 1 cm = 0.01 m ÷ 1000 m per km = 0.00001 km
Both units are defined exactly, so the factor is exact. Centimeter definition: centimeter; Kilometer definition: kilometer.
Worked examples
- A reading of 30 cm converts to 0.0003 km.
30 cm × 0.00001 = 0.0003 km - A value of 150 cm is 0.0015 km.
150 cm × 0.00001 = 0.0015 km
Centimeter to Kilometer conversion table
| Centimeters (cm) | Kilometers (km) |
|---|---|
| 1 cm | 0.00001 km |
| 2 cm | 0.00002 km |
| 2.54 cm | 0.0000254 km |
| 5 cm | 0.00005 km |
| 10 cm | 0.0001 km |
| 15 cm | 0.00015 km |
| 20 cm | 0.0002 km |
| 25 cm | 0.00025 km |
| 30 cm | 0.0003 km |
| 45 cm | 0.00045 km |
| 50 cm | 0.0005 km |
| 60 cm | 0.0006 km |
| 75 cm | 0.00075 km |
| 90 cm | 0.0009 km |
| 100 cm | 0.001 km |
| 120 cm | 0.0012 km |
| 150 cm | 0.0015 km |
| 160 cm | 0.0016 km |
| 165 cm | 0.00165 km |
| 170 cm | 0.0017 km |
| 175 cm | 0.00175 km |
| 180 cm | 0.0018 km |
| 185 cm | 0.00185 km |
| 190 cm | 0.0019 km |
| 200 cm | 0.002 km |
Where it's used
Centimeters are used for body height (e.g. 175 cm), while kilometers appear in road distances and speed (km/h). Both measure length and distance, so the conversion is a fixed factor.
Centimeter to other length units
| Conversion | 1 cm equals |
|---|---|
| centimeter to meter | 0.01 m |
| centimeter to kilometer | 0.00001 km |
| centimeter to millimeter | 10 mm |
| centimeter to micrometer | 10000 µm |
| centimeter to nanometer | 10000000 nm |
| centimeter to angstrom | 100000000 Å |
| centimeter to mile | 0.000006213711922 mi |
| centimeter to yard | 0.01093613298 yd |
| centimeter to foot | 0.03280839895 ft |
| centimeter to inch | 0.3937007874 in |
| centimeter to mil | 393.7007874 mil |
| centimeter to nautical mile | 0.000005399568035 nmi |
Frequently asked questions
How many kilometers are in 1 centimeter?
1 cm = 0.00001 km.
How do I convert centimeters to kilometers?
Multiply the value in cm by 0.00001, or divide it by 100000. For example, 15 cm × 0.00001 = 0.00015 km.
Is the cm to km conversion exact?
Yes. Both units are defined exactly, and 1 cm is exactly 0.00001 km.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Centimeters to Kilometers. Retrieved October 17, 2026, from https://scientificconverters.com/length/centimeters-to-kilometers/
IEEE
Scientific Converters, "Convert Centimeters to Kilometers," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/centimeters-to-kilometers/