670 decimeters in millimeters

Conversion formula
How to convert 670 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: 670 ⁢ dm = 67000 ⁢ mm

Conversion in the opposite direction

The inverse of the conversion factor is that 1 millimeter is equal to 1.49253731343284e-05 times 670 decimeters.

It can also be expressed as: 670 decimeters is equal to $\frac{1}{\mathrm{1.49253731343284e-05}}$ millimeters.

Approximation

An approximate numerical result would be: six hundred and seventy decimeters is about sixty-seven thousand millimeters, or alternatively, a millimeter is about zero times six hundred and seventy decimeters.