## 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 5.1 feet into kilometers we have to multiply 5.1 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

5.1 ft → L(km)

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

L(km) = 5.1 ft × 0.0003048 km

L(km) = 0.00155448 km

The final result is:

5.1 ft → 0.00155448 km

We conclude that 5.1 feet is equivalent to 0.00155448 kilometers:

5.1 feet = 0.00155448 kilometers

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 643.30194019865 × 5.1 feet.

Another way is saying that 5.1 feet is equal to 1 ÷ 643.30194019865 kilometers.

## Approximate result

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

5.1 ft ≅ 0.002 km

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

feet (ft) kilometers (km)
6.1 feet 0.002 kilometers
7.1 feet 0.002 kilometers
8.1 feet 0.002 kilometers
9.1 feet 0.003 kilometers
10.1 feet 0.003 kilometers
11.1 feet 0.003 kilometers
12.1 feet 0.004 kilometers
13.1 feet 0.004 kilometers
14.1 feet 0.004 kilometers
15.1 feet 0.005 kilometers