420 centimeters in decimeters

Conversion formula
How to convert 420 centimeters to decimeters?

We know (by definition) that: $1\mathrm{cm}=0.1\mathrm{dm}$

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

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

Conclusion: 420 ⁢ cm = 42.0 ⁢ dm

Conversion in the opposite direction

The inverse of the conversion factor is that 1 decimeter is equal to 0.0238095238095238 times 420 centimeters.

It can also be expressed as: 420 centimeters is equal to $\frac{1}{\mathrm{0.0238095238095238}}$ decimeters.

Approximation

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