Conversion formula

The conversion factor from feet per second to kilometers per hour is 1.0972799999991, which means that 1 foot per second is equal to 1.0972799999991 kilometers per hour:

1 ft/s = 1.0972799999991 km/h

To convert 138 feet per second into kilometers per hour we have to multiply 138 by the conversion factor in order to get the velocity amount from feet per second to kilometers per hour. We can also form a simple proportion to calculate the result:

1 ft/s → 1.0972799999991 km/h

138 ft/s → V_(km/h)

Solve the above proportion to obtain the velocity V in kilometers per hour:

V_(km/h) = 138 ft/s × 1.0972799999991 km/h

V_(km/h) = 151.42463999988 km/h

The final result is:

138 ft/s → 151.42463999988 km/h

We conclude that 138 feet per second is equivalent to 151.42463999988 kilometers per hour:

138 feet per second = 151.42463999988 kilometers per hour

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer per hour is equal to 0.0066039450382765 × 138 feet per second.

Another way is saying that 138 feet per second is equal to 1 ÷ 0.0066039450382765 kilometers per hour.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one hundred thirty-eight feet per second is approximately one hundred fifty-one point four two five kilometers per hour:

138 ft/s ≅ 151.425 km/h

An alternative is also that one kilometer per hour is approximately zero point zero zero seven times one hundred thirty-eight feet per second.

Conversion table

feet per second to kilometers per hour chart

For quick reference purposes, below is the conversion table you can use to convert from feet per second to kilometers per hour