138 kilometers in centimeters

Conversion formula
How to convert 138 kilometers to centimeters?

We know (by definition) that: $1\mathrm{km}=100000\mathrm{cm}$

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

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

Conclusion: 138 ⁢ km = 13800000 ⁢ cm

Conversion in the opposite direction

The inverse of the conversion factor is that 1 centimeter is equal to 7.2463768115942e-08 times 138 kilometers.

It can also be expressed as: 138 kilometers is equal to $\frac{1}{\mathrm{7.2463768115942e-08}}$ centimeters.

Approximation

An approximate numerical result would be: one hundred and thirty-eight kilometers is about thirteen million, eight hundred thousand centimeters, or alternatively, a centimeter is about zero times one hundred and thirty-eight kilometers.