721 yards in kilometers

Conversion formula
How to convert 721 yards to kilometers?

We know (by definition) that: $1\mathrm{yd}=0.0009144\mathrm{km}$

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

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

Conclusion: 721 ⁢ yd = 0.6592824 ⁢ km

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer is equal to 1.51680069117574 times 721 yards.

It can also be expressed as: 721 yards is equal to $\frac{1}{\mathrm{1.51680069117574}}$ kilometers.

Approximation

An approximate numerical result would be: seven hundred and twenty-one yards is about zero point six six kilometers, or alternatively, a kilometer is about one point five two times seven hundred and twenty-one yards.