125 decimeters in millimeters

Conversion formula
How to convert 125 decimeters to millimeters?

We know (by definition) that: $1\mathrm{dm}=100\mathrm{mm}$

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

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

Conclusion: 125 ⁢ dm = 12500 ⁢ mm

Conversion in the opposite direction

The inverse of the conversion factor is that 1 millimeter is equal to 8e-05 times 125 decimeters.

It can also be expressed as: 125 decimeters is equal to $\frac{1}{\mathrm{8e-05}}$ millimeters.

Approximation

An approximate numerical result would be: one hundred and twenty-five decimeters is about twelve thousand, five hundred millimeters, or alternatively, a millimeter is about zero times one hundred and twenty-five decimeters.