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 685 feet into kilometers we have to multiply 685 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

685 ft → L_(km)

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

L_(km) = 685 ft × 0.0003048 km

L_(km) = 0.208788 km

The final result is:

685 ft → 0.208788 km

We conclude that 685 feet is equivalent to 0.208788 kilometers:

685 feet = 0.208788 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 4.78954729199 × 685 feet.

Another way is saying that 685 feet is equal to 1 ÷ 4.78954729199 kilometers.

Approximate result

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

685 ft ≅ 0.209 km

An alternative is also that one kilometer is approximately four point seven nine times six hundred eighty-five 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