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 670 millimeters into decimeters we have to multiply 670 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

670 mm → L_(dm)

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

L_(dm) = 670 mm × 0.01 dm

L_(dm) = 6.7 dm

The final result is:

670 mm → 6.7 dm

We conclude that 670 millimeters is equivalent to 6.7 decimeters:

670 millimeters = 6.7 decimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 decimeter is equal to 0.14925373134328 × 670 millimeters.

Another way is saying that 670 millimeters is equal to 1 ÷ 0.14925373134328 decimeters.

Approximate result

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

670 mm ≅ 6.7 dm

An alternative is also that one decimeter is approximately zero point one four nine times six hundred seventy 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