721 yards in kilometers
Result
The conversion result is: 721 yards is equivalent to 0.6592824 kilometers.[1]
Conversion formula
How to convert 721 yards to kilometers?
We know (by definition) that: 1 yd = 0.0009144 km.
We can set up a proportion to solve for the number of kilometers.
1 yd / 721 yd = 0.0009144 km / x km
Now, we cross multiply to solve for our unknown x:
x km = (721 yd / 1 yd) * 0.0009144 km → x km = 0.6592824 km
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 1 / 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.
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.