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 420 centimeters into decimeters we have to multiply 420 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

420 cm → L_(dm)

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

L_(dm) = 420 cm × 0.1 dm

L_(dm) = 42 dm

The final result is:

420 cm → 42 dm

We conclude that 420 centimeters is equivalent to 42 decimeters:

420 centimeters = 42 decimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 decimeter is equal to 0.023809523809524 × 420 centimeters.

Another way is saying that 420 centimeters is equal to 1 ÷ 0.023809523809524 decimeters.

Approximate result

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

420 cm ≅ 42 dm

An alternative is also that one decimeter is approximately zero point zero two four times four hundred twenty 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