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 690 feet into kilometers we have to multiply 690 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

690 ft → L_(km)

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

L_(km) = 690 ft × 0.0003048 km

L_(km) = 0.210312 km

The final result is:

690 ft → 0.210312 km

We conclude that 690 feet is equivalent to 0.210312 kilometers:

690 feet = 0.210312 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 4.7548404275553 × 690 feet.

Another way is saying that 690 feet is equal to 1 ÷ 4.7548404275553 kilometers.

Approximate result

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

690 ft ≅ 0.21 km

An alternative is also that one kilometer is approximately four point seven five five times six hundred ninety 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