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 420.4 yards into kilometers we have to multiply 420.4 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

420.4 yd → L_(km)

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

L_(km) = 420.4 yd × 0.0009144 km

L_(km) = 0.38441376 km

The final result is:

420.4 yd → 0.38441376 km

We conclude that 420.4 yards is equivalent to 0.38441376 kilometers:

420.4 yards = 0.38441376 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 2.6013636972828 × 420.4 yards.

Another way is saying that 420.4 yards is equal to 1 ÷ 2.6013636972828 kilometers.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty point four yards is approximately zero point three eight four kilometers:

420.4 yd ≅ 0.384 km

An alternative is also that one kilometer is approximately two point six zero one times four hundred twenty point four 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