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 421 feet into kilometers we have to multiply 421 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

421 ft → L_(km)

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

L_(km) = 421 ft × 0.0003048 km

L_(km) = 0.1283208 km

The final result is:

421 ft → 0.1283208 km

We conclude that 421 feet is equivalent to 0.1283208 kilometers:

421 feet = 0.1283208 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 7.7929688717651 × 421 feet.

Another way is saying that 421 feet is equal to 1 ÷ 7.7929688717651 kilometers.

Approximate result

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

421 ft ≅ 0.128 km

An alternative is also that one kilometer is approximately seven point seven nine three times four hundred twenty-one 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