## 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 1.7 decimeters into millimeters we have to multiply 1.7 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

1.7 dm → L(mm)

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

L(mm) = 1.7 dm × 100 mm

L(mm) = 170 mm

The final result is:

1.7 dm → 170 mm

We conclude that 1.7 decimeters is equivalent to 170 millimeters:

1.7 decimeters = 170 millimeters

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 0.0058823529411765 × 1.7 decimeters.

Another way is saying that 1.7 decimeters is equal to 1 ÷ 0.0058823529411765 millimeters.

## Approximate result

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

1.7 dm ≅ 170 mm

An alternative is also that one millimeter is approximately zero point zero zero six times one point seven 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)
2.7 decimeters 270 millimeters
3.7 decimeters 370 millimeters
4.7 decimeters 470 millimeters
5.7 decimeters 570 millimeters
6.7 decimeters 670 millimeters
7.7 decimeters 770 millimeters
8.7 decimeters 870 millimeters
9.7 decimeters 970 millimeters
10.7 decimeters 1070 millimeters
11.7 decimeters 1170 millimeters