## 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 128 feet per second into kilometers per hour we have to multiply 128 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

128 ft/s → V(km/h)

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

V(km/h) = 128 ft/s × 1.0972799999991 km/h

V(km/h) = 140.45183999989 km/h

The final result is:

128 ft/s → 140.45183999989 km/h

We conclude that 128 feet per second is equivalent to 140.45183999989 kilometers per hour:

128 feet per second = 140.45183999989 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 0.0071198782443918 × 128 feet per second.

Another way is saying that 128 feet per second is equal to 1 ÷ 0.0071198782443918 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 twenty-eight feet per second is approximately one hundred forty point four five two kilometers per hour:

128 ft/s ≅ 140.452 km/h

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

feet per second (ft/s) kilometers per hour (km/h)
129 feet per second 141.549 kilometers per hour
130 feet per second 142.646 kilometers per hour
131 feet per second 143.744 kilometers per hour
132 feet per second 144.841 kilometers per hour
133 feet per second 145.938 kilometers per hour
134 feet per second 147.036 kilometers per hour
135 feet per second 148.133 kilometers per hour
136 feet per second 149.23 kilometers per hour
137 feet per second 150.327 kilometers per hour
138 feet per second 151.425 kilometers per hour