20 centimeters in decimeters

Result

The conversion result is: 20 centimeters is equivalent to 2 decimeters.[1]

Conversion formula
How to convert 20 centimeters to decimeters?

We know (by definition) that: 1 cm = 0.1 dm.

We can set up a proportion to solve for the number of decimeters.

1 cm / 20 cm = 0.1 dm / x dm

Now, we cross multiply to solve for our unknown x:

x dm = (20 cm / 1 cm) * 0.1 dm → x dm = 2.0 dm

Conclusion:

20 cm = 2.0 dm

Conversion in the opposite direction

The inverse of the conversion factor is that 1 decimeter is equal to 0.5 times 20 centimeters.

It can also be expressed as: 20 centimeters is equal to 1 / 0.5 decimeters.

Approximation

An approximate numerical result would be: twenty centimeters is about zero decimeters, or alternatively, a decimeter is about zero times twenty centimeters.

Footnotes

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.