Convert Kilometers to Centimeters
1 kilometer (km) equals 100000 centimeters (cm).
1 km = 100000 cm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilometer to centimeter converter to paste a column from Excel.
How to Convert Kilometer to Centimeter
- 1 km = 100000 cm
- 1 cm = 0.00001 km
- Example: convert 15 km to cm: 15 km = 15 × 100000 cm = 1500000 cm
Formula
cm = km × 100000
Derivation from SI units:
- 1 km = 10³ m
- 1 cm = 10⁻² m
- 1 km = 1000 m ÷ 0.01 m per cm = 100000 cm
Both units are defined exactly, so the factor is exact. Kilometer definition: kilometer; Centimeter definition: centimeter.
Worked examples
- A reading of 8 km converts to 800000 cm.
8 km × 100000 = 800000 cm - A value of 50 km is 5000000 cm.
50 km × 100000 = 5000000 cm
Kilometer to Centimeter conversion table
| Kilometers (km) | Centimeters (cm) |
|---|---|
| 0.1 km | 10000 cm |
| 0.5 km | 50000 cm |
| 1 km | 100000 cm |
| 1.5 km | 150000 cm |
| 2 km | 200000 cm |
| 3 km | 300000 cm |
| 5 km | 500000 cm |
| 8 km | 800000 cm |
| 10 km | 1000000 cm |
| 15 km | 1500000 cm |
| 20 km | 2000000 cm |
| 21.0975 km | 2109750 cm |
| 25 km | 2500000 cm |
| 42.195 km | 4219500 cm |
| 50 km | 5000000 cm |
| 80 km | 8000000 cm |
| 100 km | 10000000 cm |
| 160 km | 16000000 cm |
| 200 km | 20000000 cm |
| 500 km | 50000000 cm |
| 1000 km | 100000000 cm |
Where it's used
Kilometers are used for road distances and speed (km/h), while centimeters appear in body height (e.g. 175 cm). Both measure length and distance, so the conversion is a fixed factor.
Kilometer to other length units
| Conversion | 1 km equals |
|---|---|
| kilometer to meter | 1000 m |
| kilometer to centimeter | 100000 cm |
| kilometer to millimeter | 1000000 mm |
| kilometer to micrometer | 1000000000 µm |
| kilometer to nanometer | 1000000000000 nm |
| kilometer to angstrom | 10000000000000 Å |
| kilometer to mile | 0.6213711922 mi |
| kilometer to yard | 1093.613298 yd |
| kilometer to foot | 3280.839895 ft |
| kilometer to inch | 39370.07874 in |
| kilometer to mil | 39370078.74 mil |
| kilometer to nautical mile | 0.5399568035 nmi |
Frequently asked questions
How many centimeters are in 1 kilometer?
1 km = 100000 cm.
How do I convert kilometers to centimeters?
Multiply the value in km by 100000. For example, 15 km × 100000 = 1500000 cm.
Is the km to cm conversion exact?
Yes. Both units are defined exactly, and 1 km is exactly 100000 cm.
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 Kilometers to Centimeters. Retrieved October 17, 2026, from https://scientificconverters.com/length/kilometers-to-centimeters/
IEEE
Scientific Converters, "Convert Kilometers to Centimeters," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/kilometers-to-centimeters/