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 980 millimeters into decimeters we have to multiply 980 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

980 mm → L_(dm)

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

L_(dm) = 980 mm × 0.01 dm

L_(dm) = 9.8 dm

The final result is:

980 mm → 9.8 dm

We conclude that 980 millimeters is equivalent to 9.8 decimeters:

980 millimeters = 9.8 decimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 decimeter is equal to 0.10204081632653 × 980 millimeters.

Another way is saying that 980 millimeters is equal to 1 ÷ 0.10204081632653 decimeters.

Approximate result

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

980 mm ≅ 9.8 dm

An alternative is also that one decimeter is approximately zero point one zero two times nine hundred eighty 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