42 decimeters in kilometers

Result

The conversion result is: 42 decimeters is equivalent to 0.0042 kilometers.[1]

Conversion formula
How to convert 42 decimeters to kilometers?

We know (by definition) that: 1 dm = 0.0001 km.

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

1 dm / 42 dm = 0.0001 km / x km

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

x km = (42 dm / 1 dm) * 0.0001 km → x km = 0.004200000000000001 km

Conclusion:

42 dm = 0.004200000000000001 km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 238.095238095238 times 42 decimeters.

It can also be expressed as: 42 decimeters is equal to 1 / 238.095238095238 kilometers.

Approximation

An approximate numerical result would be: forty-two decimeters is about zero kilometers, or alternatively, a kilometer is about two hundred and thirty-eight point zero nine times forty-two decimeters.

Footnotes

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.