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 842 decimeters into millimeters we have to multiply 842 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

842 dm → L_(mm)

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

L_(mm) = 842 dm × 100 mm

L_(mm) = 84200 mm

The final result is:

842 dm → 84200 mm

We conclude that 842 decimeters is equivalent to 84200 millimeters:

842 decimeters = 84200 millimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 1.187648456057E-5 × 842 decimeters.

Another way is saying that 842 decimeters is equal to 1 ÷ 1.187648456057E-5 millimeters.

Approximate result

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

842 dm ≅ 84200 mm

An alternative is also that one millimeter is approximately zero times eight hundred forty-two 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