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 42 centimeters into decimeters we have to multiply 42 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

42 cm → L(dm)

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

L(dm) = 42 cm × 0.1 dm

L(dm) = 4.2 dm

The final result is:

42 cm → 4.2 dm

We conclude that 42 centimeters is equivalent to 4.2 decimeters:

42 centimeters = 4.2 decimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 decimeter is equal to 0.23809523809524 × 42 centimeters.

Another way is saying that 42 centimeters is equal to 1 ÷ 0.23809523809524 decimeters.

Approximate result

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

42 cm ≅ 4.2 dm

An alternative is also that one decimeter is approximately zero point two three eight times forty-two 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

centimeters (cm) decimeters (dm)
43 centimeters 4.3 decimeters
44 centimeters 4.4 decimeters
45 centimeters 4.5 decimeters
46 centimeters 4.6 decimeters
47 centimeters 4.7 decimeters
48 centimeters 4.8 decimeters
49 centimeters 4.9 decimeters
50 centimeters 5 decimeters
51 centimeters 5.1 decimeters
52 centimeters 5.2 decimeters