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 3980 feet into kilometers we have to multiply 3980 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

3980 ft → L_(km)

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

L_(km) = 3980 ft × 0.0003048 km

L_(km) = 1.213104 km

The final result is:

3980 ft → 1.213104 km

We conclude that 3980 feet is equivalent to 1.213104 kilometers:

3980 feet = 1.213104 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 0.82433163191284 × 3980 feet.

Another way is saying that 3980 feet is equal to 1 ÷ 0.82433163191284 kilometers.

Approximate result

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

3980 ft ≅ 1.213 km

An alternative is also that one kilometer is approximately zero point eight two four times three thousand nine hundred eighty 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