Conversion formula

The conversion factor from feet to kilometers is 0.0003048, which means that 1 foot is equal to 0.0003048 kilometers:

1 ft = 0.0003048 km

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

1 ft → 0.0003048 km

642 ft → L_(km)

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

L_(km) = 642 ft × 0.0003048 km

L_(km) = 0.1956816 km

The final result is:

642 ft → 0.1956816 km

We conclude that 642 feet is equivalent to 0.1956816 kilometers:

642 feet = 0.1956816 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 5.1103425155968 × 642 feet.

Another way is saying that 642 feet is equal to 1 ÷ 5.1103425155968 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 feet is approximately zero point one nine six kilometers:

642 ft ≅ 0.196 km

An alternative is also that one kilometer is approximately five point one one times six hundred forty-two feet.

Conversion table

feet to kilometers chart

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