18 decimeters in inches

Conversion formula
How to convert 18 decimeters to inches?

We know (by definition) that: $1\mathrm{dm}\approx 3.9370079\mathrm{in}$

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

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

Conclusion: 18 ⁢ dm ≈ 70.8661422 ⁢ in

Conversion in the opposite direction

The inverse of the conversion factor is that 1 inch is equal to 0.0141111111111111 times 18 decimeters.

It can also be expressed as: 18 decimeters is equal to $\frac{1}{\mathrm{0.0141111111111111}}$ inches.

Approximation

An approximate numerical result would be: eighteen decimeters is about seventy point eight seven inches, or alternatively, a inch is about zero point zero one times eighteen decimeters.