Conversion formula

The conversion factor from centimeters to kilometers is 1.0E-5, which means that 1 centimeter is equal to 1.0E-5 kilometers:

1 cm = 1.0E-5 km

To convert 20 centimeters into kilometers we have to multiply 20 by the conversion factor in order to get the length amount from centimeters to kilometers. We can also form a simple proportion to calculate the result:

1 cm → 1.0E-5 km

20 cm → L_(km)

Solve the above proportion to obtain the length L in kilometers:

L_(km) = 20 cm × 1.0E-5 km

L_(km) = 0.0002 km

The final result is:

20 cm → 0.0002 km

We conclude that 20 centimeters is equivalent to 0.0002 kilometers:

20 centimeters = 0.0002 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 5000 × 20 centimeters.

Another way is saying that 20 centimeters is equal to 1 ÷ 5000 kilometers.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty centimeters is approximately zero kilometers:

20 cm ≅ 0 km

An alternative is also that one kilometer is approximately five thousand times twenty centimeters.

Conversion table

centimeters to kilometers chart

For quick reference purposes, below is the conversion table you can use to convert from centimeters to kilometers