Conversion formula

The conversion factor from millimeters to decimeters is 0.01, which means that 1 millimeter is equal to 0.01 decimeters:

1 mm = 0.01 dm

To convert 550 millimeters into decimeters we have to multiply 550 by the conversion factor in order to get the length amount from millimeters to decimeters. We can also form a simple proportion to calculate the result:

1 mm → 0.01 dm

550 mm → L_(dm)

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

L_(dm) = 550 mm × 0.01 dm

L_(dm) = 5.5 dm

The final result is:

550 mm → 5.5 dm

We conclude that 550 millimeters is equivalent to 5.5 decimeters:

550 millimeters = 5.5 decimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 decimeter is equal to 0.18181818181818 × 550 millimeters.

Another way is saying that 550 millimeters is equal to 1 ÷ 0.18181818181818 decimeters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that five hundred fifty millimeters is approximately five point five decimeters:

550 mm ≅ 5.5 dm

An alternative is also that one decimeter is approximately zero point one eight two times five hundred fifty millimeters.

Conversion table

millimeters to decimeters chart

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