Conversion formula

The conversion factor from yards to kilometers is 0.0009144, which means that 1 yard is equal to 0.0009144 kilometers:

1 yd = 0.0009144 km

To convert 642 yards into kilometers we have to multiply 642 by the conversion factor in order to get the length amount from yards to kilometers. We can also form a simple proportion to calculate the result:

1 yd → 0.0009144 km

642 yd → L_(km)

Solve the above proportion to obtain the length L in kilometers:

L_(km) = 642 yd × 0.0009144 km

L_(km) = 0.5870448 km

The final result is:

642 yd → 0.5870448 km

We conclude that 642 yards is equivalent to 0.5870448 kilometers:

642 yards = 0.5870448 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 1.7034475051989 × 642 yards.

Another way is saying that 642 yards is equal to 1 ÷ 1.7034475051989 kilometers.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred forty-two yards is approximately zero point five eight seven kilometers:

642 yd ≅ 0.587 km

An alternative is also that one kilometer is approximately one point seven zero three times six hundred forty-two yards.

Conversion table

yards to kilometers chart

For quick reference purposes, below is the conversion table you can use to convert from yards to kilometers