ConvertOctopus

Unit Converter

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 1.8 decimeters into millimeters we have to multiply 1.8 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

1.8 dm → L(mm)

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

L(mm) = 1.8 dm × 100 mm

L(mm) = 180 mm

The final result is:

1.8 dm → 180 mm

We conclude that 1.8 decimeters is equivalent to 180 millimeters:

1.8 decimeters = 180 millimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 0.0055555555555556 × 1.8 decimeters.

Another way is saying that 1.8 decimeters is equal to 1 ÷ 0.0055555555555556 millimeters.

Approximate result

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

1.8 dm ≅ 180 mm

An alternative is also that one millimeter is approximately zero point zero zero six times one point eight 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

decimeters (dm) millimeters (mm)
2.8 decimeters 280 millimeters
3.8 decimeters 380 millimeters
4.8 decimeters 480 millimeters
5.8 decimeters 580 millimeters
6.8 decimeters 680 millimeters
7.8 decimeters 780 millimeters
8.8 decimeters 880 millimeters
9.8 decimeters 980 millimeters
10.8 decimeters 1080 millimeters
11.8 decimeters 1180 millimeters