Example: 1 centimeter [cm] equals 0.00001 kilometer [km].
Examples
1 centimeter [cm] = 0.00001 kilometer [km]
2 centimeter [cm] = 0.00002 kilometer [km]
5 centimeter [cm] = 0.00005 kilometer [km]
10 centimeter [cm] = 0.0001 kilometer [km]
20 centimeter [cm] = 0.0002 kilometer [km]
25 centimeter [cm] = 0.00025 kilometer [km]
Practical Uses for cm to km
construction and room measurementsproduct dimensionsmaps and distance checksschool and technical work
Sources and Accuracy
Length conversions use the metre as the reference unit. Common imperial relationships are exact where standardized, such as 1 inch = 0.0254 metre and 1 foot = 0.3048 metre.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-08-16.
About These Units
centimeter [cm]
Definition
The centimeter is one hundredth of a meter and is a convenient metric unit for small everyday lengths.
History
Centimeters come from the decimal metric system, where prefixes make units scale cleanly by powers of ten.
Current use
Centimeters are common for body measurements, clothing sizes, school work, crafts, furniture, and product dimensions.
kilometer [km]
Definition
The kilometer is a metric length unit equal to 1000 meters.
History
Kilometers follow the metric prefix system, where kilo means one thousand.
Current use
Kilometers are used for road distances, running routes, maps, travel planning, and geography.
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How to Convert
Enter the value in the “From value” field.
Confirm the source unit is centimeter [cm].
Confirm the target unit is kilometer [km].
Read the instant result and formula.
Where This Conversion Is Used
construction and room measurementsproduct dimensionsmaps and distance checksschool and technical work