42 feet in kilometers

Conversion formula
How to convert 42 feet to kilometers?

We know (by definition) that: $1\mathrm{ft}=0.0003048\mathrm{km}$

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

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

Conclusion: 42 ⁢ ft = 0.0128016 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 78.1152355955506 times 42 feet.

It can also be expressed as: 42 feet is equal to $\frac{1}{\mathrm{78.1152355955506}}$ kilometers.

Approximation

An approximate numerical result would be: forty-two feet is about zero point zero one kilometers, or alternatively, a kilometer is about seventy-eight point one two times forty-two feet.