Conversion formula

The conversion factor from inches to decimeters is 0.254, which means that 1 inch is equal to 0.254 decimeters:

1 in = 0.254 dm

To convert 2.5 inches into decimeters we have to multiply 2.5 by the conversion factor in order to get the length amount from inches to decimeters. We can also form a simple proportion to calculate the result:

1 in → 0.254 dm

2.5 in → L_(dm)

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

L_(dm) = 2.5 in × 0.254 dm

L_(dm) = 0.635 dm

The final result is:

2.5 in → 0.635 dm

We conclude that 2.5 inches is equivalent to 0.635 decimeters:

2.5 inches = 0.635 decimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 decimeter is equal to 1.5748031496063 × 2.5 inches.

Another way is saying that 2.5 inches is equal to 1 ÷ 1.5748031496063 decimeters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that two point five inches is approximately zero point six three five decimeters:

2.5 in ≅ 0.635 dm

An alternative is also that one decimeter is approximately one point five seven five times two point five inches.

Conversion table

inches to decimeters chart

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