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 139 feet per second into kilometers per hour we have to multiply 139 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

139 ft/s → V_(km/h)

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

V_(km/h) = 139 ft/s × 1.0972799999991 km/h

V_(km/h) = 152.52191999988 km/h

The final result is:

139 ft/s → 152.52191999988 km/h

We conclude that 139 feet per second is equivalent to 152.52191999988 kilometers per hour:

139 feet per second = 152.52191999988 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 0.0065564346423176 × 139 feet per second.

Another way is saying that 139 feet per second is equal to 1 ÷ 0.0065564346423176 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-nine feet per second is approximately one hundred fifty-two point five two two kilometers per hour:

139 ft/s ≅ 152.522 km/h

An alternative is also that one kilometer per hour is approximately zero point zero zero seven times one hundred thirty-nine 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