Conversion formula

The conversion factor from decimeters to millimeters is 100, which means that 1 decimeter is equal to 100 millimeters:

1 dm = 100 mm

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

1 dm → 100 mm

550 dm → L_(mm)

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

L_(mm) = 550 dm × 100 mm

L_(mm) = 55000 mm

The final result is:

550 dm → 55000 mm

We conclude that 550 decimeters is equivalent to 55000 millimeters:

550 decimeters = 55000 millimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 1.8181818181818E-5 × 550 decimeters.

Another way is saying that 550 decimeters is equal to 1 ÷ 1.8181818181818E-5 millimeters.

Approximate result

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

550 dm ≅ 55000 mm

An alternative is also that one millimeter is approximately zero times five hundred fifty decimeters.

Conversion table

decimeters to millimeters chart

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