## 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 20 inches into decimeters we have to multiply 20 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

20 in → L(dm)

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

L(dm) = 20 in × 0.254 dm

L(dm) = 5.08 dm

The final result is:

20 in → 5.08 dm

We conclude that 20 inches is equivalent to 5.08 decimeters:

20 inches = 5.08 decimeters

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 decimeter is equal to 0.19685039370079 × 20 inches.

Another way is saying that 20 inches is equal to 1 ÷ 0.19685039370079 decimeters.

## Approximate result

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

20 in ≅ 5.08 dm

An alternative is also that one decimeter is approximately zero point one nine seven times twenty 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

inches (in) decimeters (dm)
21 inches 5.334 decimeters
22 inches 5.588 decimeters
23 inches 5.842 decimeters
24 inches 6.096 decimeters
25 inches 6.35 decimeters
26 inches 6.604 decimeters
27 inches 6.858 decimeters
28 inches 7.112 decimeters
29 inches 7.366 decimeters
30 inches 7.62 decimeters