Conversion formula

The conversion factor from centimeters to decimeters is 0.1, which means that 1 centimeter is equal to 0.1 decimeters:

1 cm = 0.1 dm

To convert 45 centimeters into decimeters we have to multiply 45 by the conversion factor in order to get the length amount from centimeters to decimeters. We can also form a simple proportion to calculate the result:

1 cm → 0.1 dm

45 cm → L_(dm)

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

L_(dm) = 45 cm × 0.1 dm

L_(dm) = 4.5 dm

The final result is:

45 cm → 4.5 dm

We conclude that 45 centimeters is equivalent to 4.5 decimeters:

45 centimeters = 4.5 decimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 decimeter is equal to 0.22222222222222 × 45 centimeters.

Another way is saying that 45 centimeters is equal to 1 ÷ 0.22222222222222 decimeters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that forty-five centimeters is approximately four point five decimeters:

45 cm ≅ 4.5 dm

An alternative is also that one decimeter is approximately zero point two two two times forty-five centimeters.

Conversion table

centimeters to decimeters chart

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