225 millimeters in decimeters

Conversion formula
How to convert 225 millimeters to decimeters?

We know (by definition) that: $1\mathrm{mm}=0.01\mathrm{dm}$

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

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

Conclusion: 225 ⁢ mm = 2.25 ⁢ dm

Conversion in the opposite direction

The inverse of the conversion factor is that 1 decimeter is equal to 0.444444444444444 times 225 millimeters.

It can also be expressed as: 225 millimeters is equal to $\frac{1}{\mathrm{0.444444444444444}}$ decimeters.

Approximation

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