Conversion formula

The conversion factor from decimeters to centimeters is 10, which means that 1 decimeter is equal to 10 centimeters:

1 dm = 10 cm

To convert 640 decimeters into centimeters we have to multiply 640 by the conversion factor in order to get the length amount from decimeters to centimeters. We can also form a simple proportion to calculate the result:

1 dm → 10 cm

640 dm → L_(cm)

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

L_(cm) = 640 dm × 10 cm

L_(cm) = 6400 cm

The final result is:

640 dm → 6400 cm

We conclude that 640 decimeters is equivalent to 6400 centimeters:

640 decimeters = 6400 centimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 centimeter is equal to 0.00015625 × 640 decimeters.

Another way is saying that 640 decimeters is equal to 1 ÷ 0.00015625 centimeters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred forty decimeters is approximately six thousand four hundred centimeters:

640 dm ≅ 6400 cm

An alternative is also that one centimeter is approximately zero times six hundred forty decimeters.

Conversion table

decimeters to centimeters chart

For quick reference purposes, below is the conversion table you can use to convert from decimeters to centimeters