## 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 2.5 centimeters into kilometers we have to multiply 2.5 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

2.5 cm → L(km)

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

L(km) = 2.5 cm × 1.0E-5 km

L(km) = 2.5E-5 km

The final result is:

2.5 cm → 2.5E-5 km

We conclude that 2.5 centimeters is equivalent to 2.5E-5 kilometers:

2.5 centimeters = 2.5E-5 kilometers

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 40000 × 2.5 centimeters.

Another way is saying that 2.5 centimeters is equal to 1 ÷ 40000 kilometers.

## Approximate result

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

2.5 cm ≅ 0 km

An alternative is also that one kilometer is approximately forty thousand times two point five 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

centimeters (cm) kilometers (km)
3.5 centimeters 0 kilometers
4.5 centimeters 0 kilometers
5.5 centimeters 0 kilometers
6.5 centimeters 0 kilometers
7.5 centimeters 0 kilometers
8.5 centimeters 0 kilometers
9.5 centimeters 0 kilometers
10.5 centimeters 0 kilometers
11.5 centimeters 0 kilometers
12.5 centimeters 0 kilometers