How to convert 40 yards to kilometers?
We know (by definition) that:
We can set up a proportion to solve for the number of kilometers.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 kilometer is equal to 27.3403324584427 times 40 yards.
It can also be expressed as: 40 yards is equal to kilometers.
An approximate numerical result would be: forty yards is about zero point zero four kilometers, or alternatively, a kilometer is about twenty-seven point three three times forty yards.
 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.