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 721 feet per second into kilometers per hour we have to multiply 721 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

721 ft/s → V_(km/h)

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

V_(km/h) = 721 ft/s × 1.0972799999991 km/h

V_(km/h) = 791.13887999937 km/h

The final result is:

721 ft/s → 791.13887999937 km/h

We conclude that 721 feet per second is equivalent to 791.13887999937 kilometers per hour:

721 feet per second = 791.13887999937 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 0.0012640005759808 × 721 feet per second.

Another way is saying that 721 feet per second is equal to 1 ÷ 0.0012640005759808 kilometers per hour.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that seven hundred twenty-one feet per second is approximately seven hundred ninety-one point one three nine kilometers per hour:

721 ft/s ≅ 791.139 km/h

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