Conversion formula

The conversion factor from decimeters to feet is 0.32808398950131, which means that 1 decimeter is equal to 0.32808398950131 feet:

1 dm = 0.32808398950131 ft

To convert 21 decimeters into feet we have to multiply 21 by the conversion factor in order to get the length amount from decimeters to feet. We can also form a simple proportion to calculate the result:

1 dm → 0.32808398950131 ft

21 dm → L_(ft)

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

L_(ft) = 21 dm × 0.32808398950131 ft

L_(ft) = 6.8897637795276 ft

The final result is:

21 dm → 6.8897637795276 ft

We conclude that 21 decimeters is equivalent to 6.8897637795276 feet:

21 decimeters = 6.8897637795276 feet

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 foot is equal to 0.14514285714286 × 21 decimeters.

Another way is saying that 21 decimeters is equal to 1 ÷ 0.14514285714286 feet.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty-one decimeters is approximately six point eight nine feet:

21 dm ≅ 6.89 ft

An alternative is also that one foot is approximately zero point one four five times twenty-one decimeters.

Conversion table

decimeters to feet chart

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