Convert Centimeters to Kilometers
1 centimeter is 0.00001 km. One centimeter is exactly 0.00001 kilometers.
One centimeter is 1.0000 × 10^-5 kilometers. To convert centimeters to kilometers, multiply by 1.0000 × 10^-5; to go the other way, divide by 1.0000 × 10^-5 or multiply by 100000. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST. One hundredth of a meter, and the unit most of the world states height in.
Factor checked against the defining standard · How we check
- Centimeters × 1.0000 × 10^-5
1 * 0.000010 km
1 centimeter in every length unit
| Unit | Value | Exact factor |
|---|---|---|
| inches | 0.3937007874 in | × 0.393700787402 |
| feet | 0.03280839895 ft | × 0.0328083989501 |
| yards | 0.01093613298 yd | × 0.0109361329834 |
| miles | 0.000006213711922 mi | × 0.00000621371192237 |
| millimeters | 10 mm | × 10 |
| decimetres | 0.1 dm | × 0.1 |
| centimeters (as entered) | 1 cm | — |
| meters | 0.01 m | × 0.01 |
| kilometers | 0.00001 km | × 0.00001 |
| nautical miles | 0.000005399568035 nmi | × 0.00000539956803456 |
| micrometers | 10,000 µm | × 10,000 |
| nanometers | 10,000,000 nm | × 10,000,000 |
| thou | 393.7007874 thou | × 393.700787402 |
Factors are entered by hand from NIST rather than derived from a units library, so the ones that terminate are exact rather than rounded.
The same converter answers this pair however it is written: centimetres to kilometres is the British spelling of the same units — the metre and the litre are spelled that way outside the United States and the quantity does not change.
How do you convert centimeters to kilometers? The converter and the working
- 1.Take the measurement in centimeters.
- 2.Multiply by 1.0000 × 10^-5 — that is how many kilometers fit in one centimeter.
- 3.To go back the other way, divide by 1.0000 × 10^-5, or multiply by 100000.
Worked example: 25 centimeters to kilometers
- Formula
- cm × 1.0000 × 10^-5 = km
- Arithmetic
- 25 × 1.0000 × 10^-5 = 0.00025 km
- Answer
- 25 cm = 0.00025 km
The factor is rounded for display; the figure above is computed from the full value.
Centimeters to kilometers conversion table
| Centimeters | Kilometers |
|---|---|
| 1 cm | 0.00001 km |
| 2 cm | 0.00002 km |
| 3 cm | 0.00003 km |
| 4 cm | 0.00004 km |
| 5 cm | 0.00005 km |
| 6 cm | 0.00006 km |
| 7 cm | 0.00007 km |
| 8 cm | 0.00008 km |
| 9 cm | 0.00009 km |
| 10 cm | 0.0001 km |
| 12 cm | 0.00012 km |
| 15 cm | 0.00015 km |
| 20 cm | 0.0002 km |
| 25 cm | 0.00025 km |
| 50 cm | 0.0005 km |
| 100 cm | 0.001 km |
| 200 cm | 0.002 km |
| 300 cm | 0.003 km |
| 500 cm | 0.01 km |
| 1000 cm | 0.01 km |
| 2000 cm | 0.02 km |
| 5000 cm | 0.05 km |
| 10000 cm | 0.1 km |
What is a centimeter?
One hundredth of a meter, and the unit most of the world states height in.
What is a kilometer?
One thousand meters, and about 0.621 miles.
How many kilometers are in a centimeter?
One centimeter is 1.0000 × 10^-5 kilometers. Going the other way, one kilometer is 100000 centimeters. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every length unit here
The whole group — 13 units with their symbols and the size of each one in meters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a centimeter.
Source: NIST — international yard and pound agreement (inch = 25.4 mm exactly)
Cite this page
- APA
- Rule Calculator. (2026). Convert Centimeters to kilometers. Rule Calculator. https://rulecalculators.com/convert/centimeter-to-kilometer
- MLA
- "Convert Centimeters to kilometers." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/centimeter-to-kilometer.
- Chicago
- Rule Calculator. "Convert Centimeters to kilometers." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/centimeter-to-kilometer.
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Questions people actually ask
- How many kilometers are in a centimeter?
- 1.0000 × 10^-5. One thousand meters, and about 0.621 miles.
- How do I convert kilometers back to centimeters?
- Divide by 1.0000 × 10^-5, or multiply by 100000 — they are the same operation.
Other length conversions
Kilometers to centimeters — the same conversion the other way.